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CoVinceWindowsOverlay.cpp

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CoVinceWindowsOverlay.cpp

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#include "pch.h" 
#include "CoVinceWindowsOverlay.h"
//extra test log file
#include <ShlObj.h> // For SHGetKnownFolderPath
//extra test log file
#pragma comment(lib, "Shell32.lib") // Link against Shell32.lib (often needed for SH functions)

using namespace Gdiplus; // Optional: use namespace

#pragma comment (lib,"Gdiplus.lib") // Link against Gdiplus library

// --- Forward Declarations ---
LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);

// --- Global variables ---
std::vector<HWND> g_overlayWindows; // Use g_ prefix for global convention
std::wstring g_overlayText = L"";
std::atomic<bool> g_showOverlayText = false; // Use atomic for potential thread safety
int g_borderWidth = 0;
COLORREF g_borderColor = RGB(0, 0, 0);
int g_fontSize = 20;
std::atomic<CoVinceOverlayTextAlignment> g_textAlignment = COVINCE_OVERLAY_TEXT_ALIGN_VCENTER;
std::atomic<bool> g_overlayShown = false; // Use atomic for thread safety

const wchar_t* WND_CLASS_NAME = L"CoVinceOverlayWindowClass";
const int POINTER_NAME_FONT_SIZE = 12; // Example font size for names

// --- Add GDI+ Globals ---
ULONG_PTR g_gdiplusToken;
GdiplusStartupInput g_gdiplusStartupInput;

// --- Remote Pointer Definitions & State ---
struct RemotePointer 
{
    std::wstring userName;
    POINT position = { 0, 0 };  // Absolute screen coordinates (x, y)
    std::wstring imagePath;     // Path to the image file
    int displayWidth = 0;       // Desired display width
    int displayHeight = 0;      // Desired display height
    // No need for cached Bitmap pointer here, we use the central cache
};

std::map<std::wstring, RemotePointer> g_remotePointers; // Key: userId (wstring)
CRITICAL_SECTION g_pointersCritSec;

// --- Image Cache ---
std::map<std::wstring, Gdiplus::Bitmap*> g_imageCache; // Key: imagePath (wstring)
CRITICAL_SECTION g_imageCacheCritSec;
const size_t MAX_CACHE_ITEMS = 100;

// --- Logging Globals ---
std::ofstream g_logFileStream;
CRITICAL_SECTION g_logCritSec;
bool g_logInitialized = false;
wchar_t g_logFilePath[MAX_PATH] = { 0 }; // Store the determined log file path

// Bool for switching log to file or log to debug
std::atomic<bool> g_logToDebugView = false; // True uses DebugView logging and False Default to file logging

// Extra safety net to make sure DLL is initialized correctly before starting any functions
static std::atomic<bool> g_dllInitializedOk = false;

// --- Logging Implementation ---

// Helper to initialize logging (opens file, etc.) - Not thread-safe itself, call within lock

bool InitializeLoggingInternal()
{
    OutputDebugStringA("InitializeLoggingInternal: START \n");
    if (g_logInitialized) return true; // Already done

// 1. Get Temp Path
    DWORD pathLen = GetTempPathW(MAX_PATH, g_logFilePath);
    if (pathLen == 0 || pathLen >= MAX_PATH) {
        OutputDebugStringA("InitializeLoggingInternal: OverlayLog Error: Failed to get temp path.\n");
        return false;
    }

// 2. Generate Unique Filename Part (Timestamp + PID)
    // Get current time
    auto now = std::chrono::system_clock::now();
    auto now_c = std::chrono::system_clock::to_time_t(now);
    std::tm now_tm;
    localtime_s(&now_tm, &now_c); // Use localtime_s for safety

// Format timestamp (YYYYMMDD_HHMMSS) into a wide string buffer
    wchar_t timestampStr[80];
    wcsftime(timestampStr, sizeof(timestampStr) / sizeof(wchar_t), L"%Y%m%d_%H%M%S", &now_tm);

// Get Process ID
    DWORD processId = GetCurrentProcessId();

// Create the unique filename
    wchar_t uniqueFilename[MAX_PATH];
    swprintf_s(uniqueFilename, MAX_PATH, L"\\CoVinceOverlayLog_%s_%lu.txt", timestampStr, processId);

// 3. Append Unique Filename to Temp Path
    // Ensure we don't exceed MAX_PATH when concatenating
    if (wcslen(g_logFilePath) + wcslen(uniqueFilename) < MAX_PATH) {
        wcscat_s(g_logFilePath, MAX_PATH, uniqueFilename);
    }
    else {
        OutputDebugStringA("OverlayLog Error: Calculated log file path exceeds MAX_PATH.\n");
        // Fallback: Use a simpler name directly in temp? Or just fail?
        wcscpy_s(g_logFilePath, MAX_PATH, L"CoVinceOverlayLog_ErrorPath.txt"); // Fallback name
    }

// 4. Open file stream in WRITE mode (std::ios::out) - truncates if exists
    g_logFileStream.open(g_logFilePath, std::ios::out); // REMOVED std::ios::app

if (!g_logFileStream.is_open()) {
        OutputDebugStringA("OverlayLog Error: Failed to open log file.\n");
        wchar_t errorMsg[512];
        swprintf_s(errorMsg, L"OverlayLog Error: Failed to open %ls\n", g_logFilePath);
        OutputDebugStringW(errorMsg);
        return false;
    }

g_logInitialized = true;

// --- Log header information ---
    g_logFileStream << "----------------------------------------" << std::endl;
    g_logFileStream << "Logging Initialized: " << std::put_time(&now_tm, "%Y-%m-%d %H:%M:%S") << std::endl;

// Convert wide path to multibyte for logging to the narrow stream
    char multiBytePath[MAX_PATH * 2];
    int bytesWritten = WideCharToMultiByte(CP_UTF8, 0, g_logFilePath, -1, multiBytePath, sizeof(multiBytePath), NULL, NULL);
    if (bytesWritten > 0) {
        g_logFileStream << "Log File Path: " << multiBytePath << std::endl;
    }
    else {
        g_logFileStream << "Log File Path: [Error converting path to UTF-8]" << std::endl;
    }
    g_logFileStream << "Process ID: " << processId << std::endl;
    g_logFileStream << "----------------------------------------" << std::endl;
    g_logFileStream.flush(); // Ensure header is written

OutputDebugStringA("OverlayLog Initialized.\n");
    OutputDebugStringW(g_logFilePath); // Show the exact path in DebugView
    OutputDebugStringA("\n");

return true;
}

// Main logging function (Thread-Safe)
void LogToFile(const char* format, ...) // Or rename LogMessage
{
    OutputDebugStringA("LogToFile: START \n");

// --- Common Timestamp and Message Formatting ---
    std::string timestampStr = "[TimeERR] "; // Default timestamp in case of error
    std::string messageStr = "Error formatting log message."; // Default message

EnterCriticalSection(&g_logCritSec);
    try // Outer try for exception safety during lock
    {
        // Try to format timestamp
        try 
        {
            OutputDebugStringA("LogToFile: Try to format timestamp. \n");
            auto now = std::chrono::system_clock::now();
            auto now_c = std::chrono::system_clock::to_time_t(now);
            auto ms = std::chrono::duration_cast<std::chrono::milliseconds>(now.time_since_epoch()) % 1000;
            std::tm now_tm;
            if (localtime_s(&now_tm, &now_c) == 0) 
            { // Check return value of localtime_s
                std::ostringstream timeSs;
                timeSs << std::put_time(&now_tm, "[%H:%M:%S.") << std::setfill('0') << std::setw(3) << ms.count() << "] ";
                timestampStr = timeSs.str(); // Assign if successful
            }
        }
        catch (const std::exception& e) 
        { 
            OutputDebugStringA("!!! EXCEPTION during DebugView logging: ");
            OutputDebugStringA(e.what());
            OutputDebugStringA("\n");
        }
        // Try to format user message
        try 
        {
            OutputDebugStringA("LogToFile: Try to format user message. \n");
            char messageBuffer[2048]; // Keep buffer local
            va_list args;
            va_start(args, format);
            int result = vsnprintf_s(messageBuffer, sizeof(messageBuffer), _TRUNCATE, format, args);
            va_end(args);
            if (result >= 0) 
            { // Check formatting success
                messageStr = messageBuffer; // Assign if successful
            }
        }
        catch (...) 
        { 
            OutputDebugStringA("LogToFile: potential va_list or vsnprintf_s issues. \n");
        }
        // --- Conditional Output ---
        if (g_logToDebugView.load()) // Check the flag
        {
            // --- Output to DebugView ---
            OutputDebugStringA(timestampStr.c_str());
            OutputDebugStringA(messageStr.c_str());
            OutputDebugStringA("\n");
        }
        else // --- Output to File ---
        {
            if (!g_logInitialized) 
            {
                if (!InitializeLoggingInternal()) 
                {
                    LeaveCriticalSection(&g_logCritSec); // Need to LEAVE CS before returning!
                    return; // Init failed
                }
            }
            if (!g_logFileStream.is_open()) 
            {
                OutputDebugStringA("LogToFile: Log failure? OutputDebugStringA? Cannot write to file. \n");
                LeaveCriticalSection(&g_logCritSec); // Need to LEAVE CS before returning!
                return; // File not open
            }
            // Write the pre-formatted strings to file
            g_logFileStream << timestampStr << messageStr << std::endl;
        }
    }
    catch (const std::exception& e) // Catch known C++ exceptions
    { 
        OutputDebugStringA("!!! LogToFile: EXCEPTION caught in outer try: ");
        OutputDebugStringA(e.what());
        OutputDebugStringA("\n");
        LeaveCriticalSection(&g_logCritSec); // Ensure unlock before returning/rethrowing
        return; // Exit after logging exception
    }
    catch (...) // Catch ANY other exception (e.g., structured exceptions)
    { 
        OutputDebugStringA("!!! LogToFile: UNKNOWN EXCEPTION caught in outer try block!\n");
        LeaveCriticalSection(&g_logCritSec); // Ensure unlock before returning/rethrowing
        return; // Exit after logging exception
    }
    LeaveCriticalSection(&g_logCritSec); // Unlock on normal exit
    // Mutex automatically unlocked when lock_guard goes out of scope
}

// --- Make sure helper assumes caller holds lock, or make helper use lock ---
// Modified version that uses the lock INTERNALLY for safety when called from DllMain DETACH
void ShutdownLoggingInternal()
{
    // If file logging was active (g_logInitialized is true)
    if (!g_logToDebugView.load() && g_logInitialized) // Check if file logging was intended and initialized
    {
        EnterCriticalSection(&g_logCritSec); // Lock here for safety during file close
        try {
            // Re-check inside lock to be absolutely sure state hasn't changed
            if (g_logInitialized && g_logFileStream.is_open()) {
                auto now = std::chrono::system_clock::now();
                auto now_c = std::chrono::system_clock::to_time_t(now);
                std::tm now_tm;
                localtime_s(&now_tm, &now_c);

g_logFileStream << "----------------------------------------" << std::endl;
                g_logFileStream << "Logging Stopped: " << std::put_time(&now_tm, "%Y-%m-%d %H:%M:%S") << std::endl;
                g_logFileStream << "----------------------------------------" << std::endl;
                g_logFileStream.flush();
                g_logFileStream.close();
                OutputDebugStringA("OverlayLog File Closed.\n");
            }
            g_logInitialized = false; // Reset flag inside lock after closing/checking
        }
        catch (const std::exception& e) {
            OutputDebugStringA("!!! EXCEPTION in ShutdownLoggingInternal closing file: ");
            OutputDebugStringA(e.what());
            OutputDebugStringA("\n");
            // Ensure leave happens even on exception
        }
        catch (...) {
            OutputDebugStringA("!!! UNKNOWN EXCEPTION in ShutdownLoggingInternal closing file!!!\n");
        }
        LeaveCriticalSection(&g_logCritSec); // Leave critical section
    }
    else {
        // File logging wasn't active or needed closing
        OutputDebugStringA("OverlayLog Shutdown (File logging was not active/open).\n");
        g_logInitialized = false; // Ensure flag is false anyway
    }
}

// --- Helper Functions ---

// Registers the window class if it doesn't exist
HRESULT RegisterOverlayWindowClass(HINSTANCE hInstance)
{
    //LogToFile("RegisterOverlayWindowClass START");
    WNDCLASSEXW wcCheck = { sizeof(WNDCLASSEXW) };
    if (GetClassInfoExW(hInstance, WND_CLASS_NAME, &wcCheck))
    {
        //LogToFile("Window class '%ls' already registered.", WND_CLASS_NAME);
        return S_OK; // Already registered
    }

//LogToFile("Registering window class '%ls'.", WND_CLASS_NAME);
    WNDCLASSEXW wc = { 0 };
    wc.cbSize = sizeof(WNDCLASSEXW);
    wc.style = CS_HREDRAW | CS_VREDRAW; // Redraw on size change
    wc.lpfnWndProc = WindowProc;
    wc.cbClsExtra = 0;
    wc.cbWndExtra = 0;
    wc.hInstance = hInstance;
    wc.hIcon = NULL;
    wc.hCursor = LoadCursor(NULL, IDC_ARROW);
    wc.hbrBackground = NULL; // Transparent background handled by layering
    wc.lpszMenuName = NULL;
    wc.lpszClassName = WND_CLASS_NAME;
    wc.hIconSm = NULL;

if (!RegisterClassExW(&wc))
    {
        DWORD error = GetLastError();
        //LogToFile("RegisterClassExW failed for '%ls'. Error: %lu", WND_CLASS_NAME, error);
        return HRESULT_FROM_WIN32(error);
    }
    return S_OK;
}

// --- Cleanup Helper for Image Cache ---
void ClearImageCacheInternal()
{
    size_t count = g_imageCache.size(); // Get count before clear
    if (count == 0) return; // Nothing to clear

//LogToFile("ClearImageCacheInternal: Clearing %zu items...", count);
    // Use iterator loop for safety and C++14 compatibility if needed
    for (auto it = g_imageCache.begin(); it != g_imageCache.end(); ++it) {
        delete it->second; // Delete the GDI+ Bitmap object
    }
    // Alternative C++17 loop (requires /std:c++17 or later)
    // for (auto const& [path, bitmap] : g_imageCache) {
    //     delete bitmap;
    // }
    g_imageCache.clear();
    //LogToFile("Image cache cleared (%zu items).", count);
}

// --- Window Procedure Including mouse pointer receive ---
LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    // LogToFile("WindowProc START"); // Keep this commented unless essential; it's very frequent.
    switch (uMsg)
    {
    case WM_PAINT:
    {
        // LogToFile("WM_PAINT START"); // Also potentially very frequent
        // --- Setup Code (GetClientRect, width, height checks, Create Memory DC/Bitmap) ---
        RECT rcClient;
        if (!GetClientRect(hwnd, &rcClient)) return 0;
        int width = rcClient.right - rcClient.left;
        int height = rcClient.bottom - rcClient.top;
        if (width <= 0 || height <= 0) { PAINTSTRUCT ps; BeginPaint(hwnd, &ps); EndPaint(hwnd, &ps); return 0; }

HDC hdcScreen = GetDC(hwnd); if (!hdcScreen) return 0;
        HDC memHDC = CreateCompatibleDC(hdcScreen); if (!memHDC) { ReleaseDC(hwnd, hdcScreen); return 0; }

BITMAPINFO bmi; ZeroMemory(&bmi, sizeof(BITMAPINFO));
        bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
        bmi.bmiHeader.biWidth = width; bmi.bmiHeader.biHeight = -height; // Top-down DIB
        bmi.bmiHeader.biPlanes = 1; bmi.bmiHeader.biBitCount = 32;
        bmi.bmiHeader.biCompression = BI_RGB;
        HBITMAP memBitmap = CreateDIBSection(memHDC, &bmi, DIB_RGB_COLORS, nullptr, NULL, 0);

if (!memBitmap) { DeleteDC(memHDC); ReleaseDC(hwnd, hdcScreen); return 0; }
        HBITMAP hOldBitmap = (HBITMAP)SelectObject(memHDC, memBitmap);
        // ------------------------------------------------------------------------------

// --- GDI+ Drawing Starts ---
        { // Scope for Graphics object
            //LogToFile("GDI+ Drawing START");
            Graphics graphics(memHDC);
            graphics.SetSmoothingMode(SmoothingModeAntiAlias);
            graphics.SetTextRenderingHint(TextRenderingHintAntiAlias);
            graphics.Clear(Color(0, 0, 0, 0)); // Clear transparent

// --- Draw Border (No locking needed for reading globals here) ---
            if (g_borderWidth > 0) {
                Color borderGdiplusColor(255, GetRValue(g_borderColor), GetGValue(g_borderColor), GetBValue(g_borderColor));
                Pen borderPen(borderGdiplusColor, (REAL)g_borderWidth);
                REAL penOffset = (REAL)g_borderWidth / 2.0f;
                graphics.DrawRectangle(&borderPen, penOffset, penOffset, (REAL)width - g_borderWidth, (REAL)height - g_borderWidth);
            }

// --- Draw Overlay Text ---
            if (g_showOverlayText.load())
            {
                //LogToFile("Draw Text START");
                FontFamily fontFamily(L"Arial");
                Font font(&fontFamily, (REAL)g_fontSize, FontStyleRegular, UnitPixel);
                SolidBrush textBrush(Color(255, 255, 255, 255));
                
                // --- GDI+ Alignment Logic ---
                StringFormat format;
                CoVinceOverlayTextAlignment currentAlignment = g_textAlignment.load(); // Use .load() for atomics

// Horizontal Alignment (GDI+ StringAlignment enum)
                if ((currentAlignment & COVINCE_OVERLAY_TEXT_ALIGN_CENTER) != 0) {
                    format.SetAlignment(StringAlignmentCenter); // GDI+ Center
                }
                else if ((currentAlignment & COVINCE_OVERLAY_TEXT_ALIGN_RIGHT) != 0) {
                    format.SetAlignment(StringAlignmentFar);    // GDI+ Right (Far)
                }
                else { // Default Left
                    format.SetAlignment(StringAlignmentNear);   // GDI+ Left (Near)
                }

// Vertical Alignment (GDI+ StringAlignment enum)
                if ((currentAlignment & COVINCE_OVERLAY_TEXT_ALIGN_VCENTER) != 0) {
                    format.SetLineAlignment(StringAlignmentCenter); // GDI+ Middle (Center)
                }
                else if ((currentAlignment & COVINCE_OVERLAY_TEXT_ALIGN_BOTTOM) != 0) {
                    format.SetLineAlignment(StringAlignmentFar);    // GDI+ Bottom (Far)
                }
                else { // Default Top
                    format.SetLineAlignment(StringAlignmentNear);   // GDI+ Top (Near)
                }
                // --- End GDI+ Alignment Logic ---
                
                // Calculate Layout Rectangle (with padding)
                RectF layoutRectF(
                    (REAL)rcClient.left + g_borderWidth + 2,
                    (REAL)rcClient.top + g_borderWidth + 2,
                    (REAL)(rcClient.right - rcClient.left) - 2.0f * (g_borderWidth + 2),
                    (REAL)(rcClient.bottom - rcClient.top) - 2.0f * (g_borderWidth + 2)
                );

// Ensure width and height are not negative if padding is too large
                if (layoutRectF.Width < 0) layoutRectF.Width = 0;
                if (layoutRectF.Height < 0) layoutRectF.Height = 0;

// Now use layoutRectF in DrawString
                graphics.DrawString(g_overlayText.c_str(), -1, &font, layoutRectF, &format, &textBrush);
            }

// --- REVISED: Remote Pointer Drawing (using CRITICAL_SECTION) ---
            { // Scope for lock and GDI+ resources for pointers
                //LogToFile("Remote Pointer Drawing START");
                std::vector<RemotePointer> pointersToDraw; // Copy data to draw outside lock

// --- Lock Pointer Map ---
                EnterCriticalSection(&g_pointersCritSec); // *** USE CRITICAL_SECTION ***
                try {
                    if (!g_remotePointers.empty()) {
                        pointersToDraw.reserve(g_remotePointers.size());
                        for (const auto& pair : g_remotePointers) {
                            pointersToDraw.push_back(pair.second);
                        }
                    }
                }
                catch (...) {
                    LeaveCriticalSection(&g_pointersCritSec); // *** LEAVE CS on exception ***
                    //LogToFile("WM_PAINT: Exception copying pointer data!");
                    goto PaintCleanup; // Skip drawing pointers if copy failed
                }
                LeaveCriticalSection(&g_pointersCritSec); // *** LEAVE CS on normal path ***
                // --- Unlocked Pointer Map ---

if (!pointersToDraw.empty())
                {
                    RECT windowRect;
                    BOOL gotWindowRect = GetWindowRect(hwnd, &windowRect);

if (gotWindowRect)
                    {
                        // Create GDI+ resources needed for the loop ONCE
                        FontFamily nameFontFamily(L"Arial"); // Potential crash point?
                        Font nameFont(&nameFontFamily, (REAL)POINTER_NAME_FONT_SIZE, FontStyleRegular, UnitPixel);
                        SolidBrush nameBrush(Color(255, 255, 255, 255));
                        StringFormat nameFormat;

for (const auto& pointer : pointersToDraw)
                        {
                            int relativeX = pointer.position.x - windowRect.left;
                            int relativeY = pointer.position.y - windowRect.top;
                            int displayWidth = pointer.displayWidth;
                            int displayHeight = pointer.displayHeight;

// Basic bounds check (check if top-left corner is within reasonable bounds)
                            if (relativeX < width && relativeX + displayWidth > 0 &&
                                relativeY < height && relativeY + displayHeight > 0)
                            {
                                Gdiplus::Bitmap* cachedBitmap = nullptr;

// --- Lock Image Cache for Lookup ---
                                EnterCriticalSection(&g_imageCacheCritSec); // *** USE CRITICAL_SECTION ***
                                try {
                                    auto it = g_imageCache.find(pointer.imagePath);
                                    if (it != g_imageCache.end()) {
                                        cachedBitmap = it->second;
                                    }
                                }
                                catch (...) {
                                    LeaveCriticalSection(&g_imageCacheCritSec); // *** LEAVE CS on exception ***
                                    //LogToFile("WM_PAINT: Exception looking up image cache for '%ls'!", pointer.imagePath.c_str());
                                    continue; // Skip this pointer
                                }
                                LeaveCriticalSection(&g_imageCacheCritSec); // *** LEAVE CS on normal path ***
                                // --- Unlocked Image Cache ---

if (cachedBitmap)
                                {
                                    // --- Draw Rounded Image ---
                                    GraphicsPath path;
                                    path.AddEllipse(relativeX, relativeY, displayWidth, displayHeight);
                                    GraphicsState state = graphics.Save(); // Save state is good practice with clipping
                                    graphics.SetClip(&path, CombineModeReplace);
                                    graphics.DrawImage(cachedBitmap, relativeX, relativeY, displayWidth, displayHeight);
                                    graphics.Restore(state); // Restore state (resets clip)
                                }
                                else
                                {
                                    //LogToFile("WM_PAINT: Image not in cache for path: %ls", pointer.imagePath.c_str());
                                    // Optional: Draw fallback dot here if needed
                                }

// --- Draw Name ---
                                if (!pointer.userName.empty())
                                {
                                    PointF textOrigin((REAL)relativeX + displayWidth + 3,
                                        (REAL)relativeY + (REAL)displayHeight / 2.0f - (REAL)POINTER_NAME_FONT_SIZE / 2.0f);
                                    graphics.DrawString(pointer.userName.c_str(), -1, &nameFont, textOrigin, &nameFormat, &nameBrush);
                                }
                            } // End bounds check
                        } // End for loop
                    } // End if gotWindowRect
                } // End if pointersToDraw not empty
            } // End scope for pointer drawing

PaintCleanup: // Label for cleanup, especially after exceptions before UpdateLayeredWindow
            // --- Update Layered Window ---
            POINT ptSrc = { 0, 0 };
            POINT ptDst = { rcClient.left, rcClient.top };
            RECT windowRectULW; // Use different variable name
            if (GetWindowRect(hwnd, &windowRectULW)) { ptDst.x = windowRectULW.left; ptDst.y = windowRectULW.top; }
            SIZE sizeWnd = { width, height };
            BLENDFUNCTION blend = { AC_SRC_OVER, 0, 255, AC_SRC_ALPHA };
            BOOL success = UpdateLayeredWindow(hwnd, hdcScreen, &ptDst, &sizeWnd, memHDC, &ptSrc, 0, &blend, ULW_ALPHA);
            // if (!success) { LogToFile("UpdateLayeredWindow failed: %lu", GetLastError()); }

// --- Cleanup ---
            SelectObject(memHDC, hOldBitmap);
            DeleteObject(memBitmap);
            DeleteDC(memHDC);
            ReleaseDC(hwnd, hdcScreen);

ValidateRect(hwnd, NULL);
            return 0;
        } // End WM_PAINT
    }

case WM_DESTROY:
        //LogToFile("WM_DESTROY received for HWND %p", hwnd);
        return 0;

default:
        return DefWindowProc(hwnd, uMsg, wParam, lParam);
    }
}

BOOL CALLBACK MonitorEnumProc(HMONITOR hMonitor, HDC hdcMonitor, LPRECT lprcMonitor, LPARAM dwData)
{
    //LogToFile("MonitorEnumProc START");
    MONITORINFO mi = { sizeof(MONITORINFO) };
    if (!GetMonitorInfo(hMonitor, &mi))
    {
        //LogToFile("MonitorEnumProc: GetMonitorInfo failed for HMONITOR %p. Error: %lu", hMonitor, GetLastError());
        return TRUE; // Continue enumeration
    }

HINSTANCE hInstance = GetModuleHandle(NULL); // Get current module handle
    if (!hInstance) 
    {
        //LogToFile("MonitorEnumProc: GetModuleHandle(NULL) failed. Error: %lu", GetLastError());
        return TRUE; // Cannot create window without instance
    }

// Create the overlay window for this monitor
    //LogToFile("MonitorEnumProc: Create the overlay window START");
    HWND hwnd = CreateWindowExW(
        WS_EX_TOPMOST | WS_EX_TRANSPARENT | WS_EX_LAYERED | WS_EX_NOACTIVATE, // Added NOACTIVATE
        WND_CLASS_NAME,
        L"Overlay", // Window title (not visible)
        WS_POPUP,   // Style for borderless window
        mi.rcMonitor.left,
        mi.rcMonitor.top,
        mi.rcMonitor.right - mi.rcMonitor.left,
        mi.rcMonitor.bottom - mi.rcMonitor.top,
        NULL, NULL, hInstance, NULL
    );

if (!hwnd)
    {
        //LogToFile("MonitorEnumProc: CreateWindowExW failed for monitor %p. Error: %lu", hMonitor, GetLastError());
        return TRUE; // Continue enumeration even if one window fails
    }

// Show the window without activating it
    ShowWindow(hwnd, SW_SHOWNA);
    //UpdateWindow(hwnd); // Force initial paint
    InvalidateRect(hwnd, NULL, TRUE); // Request a repaint immediately

// Safely add HWND to the vector (passed via dwData)
    auto* pWindowsVec = reinterpret_cast<std::vector<HWND>*>(dwData);
    if (pWindowsVec) 
    {
        try 
        {
            pWindowsVec->push_back(hwnd);
        }
        catch (const std::bad_alloc&) 
        {
            //LogToFile("MonitorEnumProc: Failed to allocate memory to store HWND %p.", hwnd);
            DestroyWindow(hwnd); // Clean up
            // Decide whether to stop or continue enumeration on memory error
            return FALSE; // Stop enumeration on critical error
        }
    }
    return TRUE; // Continue enumeration
}

#ifdef __cplusplus
extern "C" {
#endif
    // --- Overlay Functions Implementation ---
    COVINCEWINDOWSOVERLAY_API HRESULT __cdecl ShowOverlay(const wchar_t* text, bool showText, int borderW, int r, int g, int b, int fSize, CoVinceOverlayTextAlignment alignment)
    {
        // --- ADD INITIALIZATION CHECK AT THE VERY START ---
        if (!g_dllInitializedOk.load(std::memory_order_acquire)) // Use acquire load for visibility
        {
            OutputDebugStringA("ShowOverlay called but DLL not initialized!\n"); // Safer log here
            return COVINCE_E_NOT_INITIALIZED;
        }
        // --- END INITIALIZATION CHECK ---
        LogToFile("ShowOverlay START");
        LogToFile("ShowOverlay called. Border width: %d, Font Size: %d", borderW, fSize);
        HRESULT hr = S_OK;

// --- Cleanup previous instance ---
        hr = HideOverlay(); // Call HideOverlay first to ensure clean state
        if (FAILED(hr))
        {
            LogToFile("ShowOverlay: HideOverlay failed with HRESULT: 0x%X", hr);
            // Decide if this is fatal. Maybe continue? For now, return error.
            return hr;
        }
        LogToFile("ShowOverlay: Previous overlay hidden successfully.");

// --- Input Validation ---
        if (!text) 
        {
            LogToFile("ShowOverlay error: text pointer is NULL.");
            return E_POINTER; // Standard HRESULT for null pointer
        }

if (borderW < 0) borderW = 0; // Basic validation
        if (fSize <= 0) fSize = 1;    // Basic validation

// --- Update Global State ---
        try 
        {
            g_overlayText = text; // Assign C-style string to std::wstring
        }
        catch (const std::exception& e) 
        {
            LogToFile("ShowOverlay: EXCEPTION assigning text: %s", e.what());
            return E_FAIL; // Indicate failure
        }
        catch (...) 
        {
            LogToFile("ShowOverlay: UNKNOWN EXCEPTION assigning text!");
            return E_FAIL;
        }
        // --- End Text Assignment Change ---

g_showOverlayText = showText;
        g_borderWidth = borderW;
        g_borderColor = RGB(r, g, b);
        g_fontSize = fSize;
        g_textAlignment = alignment;

// --- Register Window Class ---
        HINSTANCE hInstance = GetModuleHandle(NULL);
        if (!hInstance) 
        {
            DWORD error = GetLastError();
            LogToFile("ShowOverlay: GetModuleHandle(NULL) failed. Error: %lu", error);
            return HRESULT_FROM_WIN32(error);
        }
        hr = RegisterOverlayWindowClass(hInstance);
        if (FAILED(hr)) 
        {
            LogToFile("ShowOverlay: RegisterOverlayWindowClass failed with HRESULT: 0x%X", hr);
            return COVINCE_E_CLASS_REGISTRATION_FAILED; // Or return hr directly
        }

// --- Create Windows on All Monitors ---
        std::vector<HWND> tempWindows; // Create windows into a temporary vector
        LPARAM lParam = reinterpret_cast<LPARAM>(&tempWindows);
        if (!EnumDisplayMonitors(NULL, NULL, MonitorEnumProc, lParam))
        {
            // If MonitorEnumProc returned FALSE, it might be due to allocation failure
            // Otherwise, EnumDisplayMonitors itself failed.
            DWORD error = GetLastError();
            LogToFile("ShowOverlay: EnumDisplayMonitors failed. Error: %lu", error);
            // Clean up any windows that might have been created in tempWindows before failure
            for (HWND hwnd : tempWindows) 
            {
                if (IsWindow(hwnd)) DestroyWindow(hwnd);
            }
            return HRESULT_FROM_WIN32(error);
        }

// --- Finalize State ---
        if (tempWindows.empty()) 
        {
            LogToFile("ShowOverlay: No monitors found or window creation failed on all monitors.");
            // Technically not an error based on EnumDisplayMonitors, but maybe return a specific code?
            // Or just S_OK as no API failed? Let's return OK but log it.
            return S_OK;
        }

g_overlayWindows = std::move(tempWindows); // Move ownership to global vector
        g_overlayShown = true;
        LogToFile("ShowOverlay created %zu windows. Returning S_OK.", g_overlayWindows.size());
        return S_OK;
    }
    
    COVINCEWINDOWSOVERLAY_API HRESULT __cdecl ShowOverlayOnMonitor(int monitorIndex, const wchar_t* text, bool showText, int borderW, int r, int g, int b, int fSize, CoVinceOverlayTextAlignment alignment)
    {
        // --- ADD INITIALIZATION CHECK AT THE VERY START ---
        if (!g_dllInitializedOk.load(std::memory_order_acquire)) // Use acquire load for visibility
        {
            OutputDebugStringA("ShowOverlayOnMonitor called but DLL not initialized!\n"); // Safer log here
            return COVINCE_E_NOT_INITIALIZED;
        }
        // --- END INITIALIZATION CHECK ---
        LogToFile("ShowOverlayOnMonitor START");
        LogToFile("ShowOverlayOnMonitor called for index %d", monitorIndex);
        HRESULT hr = S_OK;

// --- Cleanup previous instance ---
        hr = HideOverlay();
        if (FAILED(hr)) 
        {
            LogToFile("ShowOverlayOnMonitor: HideOverlay failed with HRESULT: 0x%X", hr);
            return hr;
        }

// --- Input Validation ---
        if (!text) 
        {
            LogToFile("ShowOverlayOnMonitor error: text pointer is NULL.");
            return E_POINTER;
        }

if (borderW < 0) borderW = 0;
        if (fSize <= 0) fSize = 1;

// --- Update Global State ---
        try 
        {
            g_overlayText = text; // Assign C-style string to std::wstring
        }
        catch (const std::exception& e) {
            LogToFile("ShowOverlayOnMonitor: EXCEPTION assigning text: %s", e.what());
            return E_FAIL; // Indicate failure
        }
        catch (...) {
            LogToFile("ShowOverlayOnMonitor: UNKNOWN EXCEPTION assigning text!");
            return E_FAIL;
        }
        // --- End Text Assignment Change ---

g_showOverlayText = showText;
        g_borderWidth = borderW;
        g_borderColor = RGB(r, g, b);
        g_fontSize = fSize;
        g_textAlignment = alignment;

// --- Register Window Class ---
        HINSTANCE hInstance = GetModuleHandle(NULL);
        if (!hInstance) 
        {
            DWORD error = GetLastError();
            LogToFile("ShowOverlayOnMonitor: GetModuleHandle(NULL) failed. Error: %lu", error);
            return HRESULT_FROM_WIN32(error);
        }
        hr = RegisterOverlayWindowClass(hInstance);
        if (FAILED(hr)) 
        {
            LogToFile("ShowOverlayOnMonitor: RegisterOverlayWindowClass failed with HRESULT: 0x%X", hr);
            return COVINCE_E_CLASS_REGISTRATION_FAILED;
        }

// --- Find Specific Monitor ---
        std::vector<HMONITOR> monitors;
        LPARAM lParamMon = reinterpret_cast<LPARAM>(&monitors);
        EnumDisplayMonitors(NULL, NULL, [](HMONITOR hMon, HDC, LPRECT, LPARAM dwData) -> BOOL {
            auto* pMons = reinterpret_cast<std::vector<HMONITOR>*>(dwData);
            pMons->push_back(hMon);
            return TRUE;
            }, lParamMon);

if (monitorIndex < 0 || monitorIndex >= static_cast<int>(monitors.size())) 
        {
            LogToFile("ShowOverlayOnMonitor: Invalid monitor index %d (found %zu monitors).", monitorIndex, monitors.size());
            return COVINCE_E_INVALID_MONITOR_INDEX;
        }
        HMONITOR hMonitor = monitors[monitorIndex];

MONITORINFO mi = { sizeof(MONITORINFO) };
        if (!GetMonitorInfo(hMonitor, &mi)) 
        {
            DWORD error = GetLastError();
            LogToFile("ShowOverlayOnMonitor: GetMonitorInfo failed for index %d. Error: %lu", monitorIndex, error);
            return HRESULT_FROM_WIN32(error);
        }

// --- Create Single Window ---
        HWND hwnd = CreateWindowExW(
            WS_EX_TOPMOST | WS_EX_TRANSPARENT | WS_EX_LAYERED | WS_EX_NOACTIVATE, // Added NOACTIVATE
            WND_CLASS_NAME, L"Overlay", WS_POPUP,
            mi.rcMonitor.left, mi.rcMonitor.top,
            mi.rcMonitor.right - mi.rcMonitor.left,
            mi.rcMonitor.bottom - mi.rcMonitor.top,
            NULL, NULL, hInstance, NULL
        );

if (!hwnd) 
        {
            DWORD error = GetLastError();
            LogToFile("ShowOverlayOnMonitor: CreateWindowExW failed. Error: %lu", error);
            return COVINCE_E_WINDOW_CREATION_FAILED; // Or HRESULT_FROM_WIN32(error)
        }

ShowWindow(hwnd, SW_SHOWNA);
        InvalidateRect(hwnd, NULL, TRUE); // Request a repaint immediately

// --- Finalize State ---
        g_overlayWindows.push_back(hwnd); // Add the single window
        g_overlayShown = true;
        LogToFile("ShowOverlayOnMonitor created window %p on monitor %d. Returning S_OK.", hwnd, monitorIndex);
        return S_OK;
    }

COVINCEWINDOWSOVERLAY_API HRESULT __cdecl HideOverlay()
    {
        // --- ADD INITIALIZATION CHECK AT THE VERY START ---
        if (!g_dllInitializedOk.load(std::memory_order_acquire)) // Use acquire load for visibility
        {
            OutputDebugStringA("HideOverlay called but DLL not initialized!\n"); // Safer log here
            return COVINCE_E_NOT_INITIALIZED;
        }
        // --- END INITIALIZATION CHECK ---
        LogToFile("HideOverlay START");

// --- Handle "Already Hidden" State ---
        // Check the atomic flag first for quick exit
        if (!g_overlayShown.load()) {
            LogToFile("HideOverlay: Overlay already hidden or not initialized.");

// Optional: You could add checks/cleanup here for consistency if pointers/cache
            // somehow got populated without g_overlayShown being true, but it might
            // indicate logic errors elsewhere. Let's keep it simple for now.
            // If you need it:
            /*
            EnterCriticalSection(&g_pointersCritSec);
            try { if (!g_remotePointers.empty()) g_remotePointers.clear(); } catch(...) {}
            LeaveCriticalSection(&g_pointersCritSec);
            EnterCriticalSection(&g_imageCacheCritSec);
            try { if (!g_imageCache.empty()) ClearImageCacheInternal(); } catch(...) {}
            LeaveCriticalSection(&g_imageCacheCritSec);
            */
            return S_OK; // Nothing to do
        }

// --- Destroy Windows (No lock needed for this part) ---
        LogToFile("HideOverlay: Destroying %zu windows.", g_overlayWindows.size());
        for (HWND hwnd : g_overlayWindows)
        {
            if (IsWindow(hwnd))
            {
                DestroyWindow(hwnd);
            }
        }
        g_overlayWindows.clear(); // Clear window list AFTER destroying

// --- Cleanup Pointer Map ---
        bool pointersWereCleared = false;
        EnterCriticalSection(&g_pointersCritSec);
        try {
            if (!g_remotePointers.empty()) {
                g_remotePointers.clear();
                pointersWereCleared = true;
                // Logging moved after LeaveCriticalSection
            }
        }
        catch (const std::exception& e) {
            // Log error *after* leaving critical section if possible
            LogToFile("HideOverlay: EXCEPTION clearing pointer map: %s", e.what());
        }
        catch (...) {
            LogToFile("HideOverlay: UNKNOWN EXCEPTION clearing pointer map!");
        }
        LeaveCriticalSection(&g_pointersCritSec); // Ensure Leave is always called

if (pointersWereCleared) {
            LogToFile("HideOverlay: Cleared pointer map.");
        }

// --- Cleanup Image Cache ---
        bool cacheWasCleared = false;
        EnterCriticalSection(&g_imageCacheCritSec);
        try {
            if (!g_imageCache.empty()) {
                ClearImageCacheInternal(); // Helper deletes bitmaps AND logs clearing now
                cacheWasCleared = true;
            }
        }
        catch (const std::exception& e) {
            LogToFile("HideOverlay: EXCEPTION clearing image cache: %s", e.what());
        }
        catch (...) {
            LogToFile("HideOverlay: UNKNOWN EXCEPTION clearing image cache!");
        }
        LeaveCriticalSection(&g_imageCacheCritSec); // Ensure Leave is always called

// --- ------------------------------------ ---

g_overlayShown = false; // Set flag AFTER cleanup attempts

LogToFile("HideOverlay completed.");
        return S_OK;
    }

// --- Helper for update functions ---
    HRESULT UpdateOverlayProperty(std::function<void()> updateAction)
    {
        LogToFile("UpdateOverlayProperty: START");
        if (!g_overlayShown.load() || g_overlayWindows.empty()) {
            LogToFile("UpdateOverlayProperty: Overlay not initialized.");
            return COVINCE_E_NOT_INITIALIZED;
        }

updateAction(); // Perform the specific state update

// Invalidate all windows
        for (HWND hwnd : g_overlayWindows) {
            if (IsWindow(hwnd)) {
                InvalidateRect(hwnd, NULL, TRUE);
            }
        }
        LogToFile("UpdateOverlayProperty completed and invalidated windows. Returning S_OK.");
        return S_OK;
    }

// --- Update Functions Implementation ---
    COVINCEWINDOWSOVERLAY_API HRESULT __cdecl ShowOverlayText(bool show)
    {
        // --- ADD INITIALIZATION CHECK AT THE VERY START ---
        if (!g_dllInitializedOk.load(std::memory_order_acquire)) // Use acquire load for visibility
        {
            OutputDebugStringA("ShowOverlayText called but DLL not initialized!\n"); // Safer log here
            return COVINCE_E_NOT_INITIALIZED;
        }
        // --- END INITIALIZATION CHECK ---
        LogToFile("ShowOverlayText called with show = %d", show);
        return UpdateOverlayProperty([&]() {
            g_showOverlayText = show;
            });
    }

COVINCEWINDOWSOVERLAY_API HRESULT __cdecl UpdateOverlayText(const wchar_t* text)
    {
        // --- ADD INITIALIZATION CHECK AT THE VERY START ---
        if (!g_dllInitializedOk.load(std::memory_order_acquire)) // Use acquire load for visibility
        {
            OutputDebugStringA("UpdateOverlayText called but DLL not initialized!\n"); // Safer log here
            return COVINCE_E_NOT_INITIALIZED;
        }
        // --- END INITIALIZATION CHECK ---
        LogToFile("UpdateOverlayText START");
        if (!text) {
            LogToFile("UpdateOverlayText error: text pointer is NULL.");
            return E_POINTER;
        }

// Optional: You might still want a general sanity check on length,
        // but it's not tied to a fixed buffer size anymore.
        /*
        size_t textLen = wcslen(text);
        if (textLen > 4096) { // Example: Arbitrary large limit
            LogToFile("UpdateOverlayText error: text length (%zu) exceeds arbitrary limit.", textLen);
            return E_INVALIDARG; // Or a custom HRESULT
        }
        */

// Use UpdateOverlayProperty, passing a lambda that assigns to the std::wstring
        return UpdateOverlayProperty([&]() {
            try {
                // Use the std::wstring assignment operator
                g_overlayText = text;
                // Optional logging inside lambda if needed, using LogToFile carefully
                // LogToFile("Updated g_overlayText");
            }
            catch (const std::bad_alloc& e) {
                // Handle potential memory allocation failure during wstring assignment
                LogToFile("UpdateOverlayText: EXCEPTION assigning text (bad_alloc): %s", e.what());
                // Cannot easily return error HRESULT from lambda within UpdateOverlayProperty
                // Maybe set a global error flag if needed? Or just log.
            }
            catch (const std::exception& e) {
                LogToFile("UpdateOverlayText: EXCEPTION assigning text: %s", e.what());
            }
            catch (...) {
                LogToFile("UpdateOverlayText: UNKNOWN EXCEPTION assigning text!");
            }
            });
    }

COVINCEWINDOWSOVERLAY_API HRESULT __cdecl UpdateOverlayFontSize(int fSize)
    {
        // --- ADD INITIALIZATION CHECK AT THE VERY START ---
        if (!g_dllInitializedOk.load(std::memory_order_acquire)) // Use acquire load for visibility
        {
            OutputDebugStringA("UpdateOverlayFontSize called but DLL not initialized!\n"); // Safer log here
            return COVINCE_E_NOT_INITIALIZED;
        }
        // --- END INITIALIZATION CHECK ---
        LogToFile("UpdateOverlayFontSize called with fSize = %d", fSize);
        if (fSize <= 0) fSize = 1; // Basic validation
        return UpdateOverlayProperty([&]() {
            g_fontSize = fSize;
            });
    }

COVINCEWINDOWSOVERLAY_API HRESULT __cdecl UpdateOverlayWidth(int bWidth)
    {
        // --- ADD INITIALIZATION CHECK AT THE VERY START ---
        if (!g_dllInitializedOk.load(std::memory_order_acquire)) // Use acquire load for visibility
        {
            OutputDebugStringA("UpdateOverlayWidth called but DLL not initialized!\n"); // Safer log here
            return COVINCE_E_NOT_INITIALIZED;
        }
        // --- END INITIALIZATION CHECK ---
        LogToFile("UpdateOverlayWidth called with bWidth = %d", bWidth);
        if (bWidth < 0) bWidth = 0; // Basic validation
        return UpdateOverlayProperty([&]() {
            g_borderWidth = bWidth;
            });
    }

COVINCEWINDOWSOVERLAY_API HRESULT __cdecl UpdateOverlayColor(int r, int g, int b)
    {
        // --- ADD INITIALIZATION CHECK AT THE VERY START ---
        if (!g_dllInitializedOk.load(std::memory_order_acquire)) // Use acquire load for visibility
        {
            OutputDebugStringA("UpdateOverlayColor called but DLL not initialized!\n"); // Safer log here
            return COVINCE_E_NOT_INITIALIZED;
        }
        // --- END INITIALIZATION CHECK ---
        LogToFile("UpdateOverlayColor called with RGB(%d, %d, %d)", r, g, b);
        return UpdateOverlayProperty([&]() {
            g_borderColor = RGB(r, g, b);
            });
    }

COVINCEWINDOWSOVERLAY_API HRESULT __cdecl UpdateOverlayAlignment(CoVinceOverlayTextAlignment alignment)
    {
        // --- ADD INITIALIZATION CHECK AT THE VERY START ---
        if (!g_dllInitializedOk.load(std::memory_order_acquire)) // Use acquire load for visibility
        {
            OutputDebugStringA("UpdateOverlayAlignment called but DLL not initialized!\n"); // Safer log here
            return COVINCE_E_NOT_INITIALIZED;
        }
        // --- END INITIALIZATION CHECK ---
        LogToFile("UpdateOverlayAlignment called with alignment = %d", alignment);
        return UpdateOverlayProperty([&]() {
            g_textAlignment = alignment; // This automatically uses atomic store
            });
    }

// --- Pointer API Functions (Modified for Image Path) ---
    COVINCEWINDOWSOVERLAY_API HRESULT __cdecl AddOrUpdatePointer(const wchar_t* userId, const wchar_t* userName, int x, int y, const wchar_t* imagePath, int desiredWidth, int desiredHeight)  // Desired Size
    {
        // --- ADD INITIALIZATION CHECK AT THE VERY START ---
        if (!g_dllInitializedOk.load(std::memory_order_acquire)) // Use acquire load for visibility
        {
            OutputDebugStringA("AddOrUpdatePointer called but DLL not initialized!\n"); // Safer log here
            return COVINCE_E_NOT_INITIALIZED;
        }
        // --- END INITIALIZATION CHECK ---
        // --- Input Validation ---
        if (!userId || !userName || !imagePath) {
            LogToFile("AddOrUpdatePointer ERROR: Null input pointer provided.");
            return E_POINTER;
        }
        if (desiredWidth <= 0 || desiredHeight <= 0) {
            LogToFile("AddOrUpdatePointer ERROR: Invalid desired dimensions (%d x %d) for UserID '%ls'.", desiredWidth, desiredHeight, userId);
            return E_INVALIDARG;
        }

LogToFile("AddOrUpdatePointer START - UserID: '%ls', Img: '%ls', Pos: (%d,%d), Size: (%dx%d)",
            userId, imagePath, x, y, desiredWidth, desiredHeight);

HRESULT hr = S_OK;
        bool imageLoadedOrExisted = false;
        std::wstring wsImagePath = imagePath; // Convert path for map key/comparison

// --- Load/Cache Image (Protected by Image Cache Critical Section) ---
        EnterCriticalSection(&g_imageCacheCritSec);
        try
        {
            auto it = g_imageCache.find(wsImagePath);
            if (it == g_imageCache.end()) { // Not in cache
                LogToFile("AddOrUpdatePointer: Image '%ls' not in cache. Loading...", wsImagePath.c_str());
                Bitmap* newBitmap = nullptr;
                try {
                    // Use Bitmap constructor that takes path and useEmbeddedColorManagement flag
                    newBitmap = new Bitmap(wsImagePath.c_str(), FALSE); // Create on heap
                }
                catch (const std::exception& e) {
                    LogToFile("AddOrUpdatePointer: EXCEPTION during Bitmap creation for '%ls': %s", wsImagePath.c_str(), e.what());
                    hr = E_FAIL;
                }
                catch (...) {
                    LogToFile("AddOrUpdatePointer: UNKNOWN EXCEPTION during Bitmap creation for '%ls'", wsImagePath.c_str());
                    hr = E_FAIL;
                }

// Check GDI+ status *after* potential constructor completion/exception
                if (SUCCEEDED(hr)) {
                    if (newBitmap && newBitmap->GetLastStatus() == Ok) {
                        g_imageCache[wsImagePath] = newBitmap; // Store pointer in cache
                        imageLoadedOrExisted = true;
                        LogToFile("Loaded image '%ls' into cache.", wsImagePath.c_str());

if (g_imageCache.size() > MAX_CACHE_ITEMS) {
                            LogToFile("Image cache size (%zu) exceeds limit (%zu). Trimming...", g_imageCache.size(), MAX_CACHE_ITEMS);
                            size_t itemsToDelete = g_imageCache.size() / 2; // Or just trim down to MAX_CACHE_ITEMS
                            auto it = g_imageCache.begin();
                            for (size_t i = 0; i < itemsToDelete && it != g_imageCache.end(); ++i) {
                                LogToFile("Trimming image cache: Deleting '%ls'", it->first.c_str());
                                delete it->second; // Delete the bitmap
                                it = g_imageCache.erase(it); // Erase element and advance iterator correctly
                            }
                            LogToFile("Image cache trimmed. New size: %zu", g_imageCache.size());
                        }
                    }
                    else {
                        Status loadStatus = newBitmap ? newBitmap->GetLastStatus() : GenericError; // Get status or error code
                        LogToFile("Failed to load image '%ls'. GDI+ Status: %d", wsImagePath.c_str(), loadStatus);
                        delete newBitmap; // Important: delete pointer if constructor succeeded but status is bad, or if constructor returned null but allocated something partially? Safer to delete.
                        hr = E_FAIL;
                    }
                }
                else {
                    // Exception occurred during Bitmap creation, ensure pointer is deleted if somehow non-null
                    delete newBitmap;
                }
            }
            else {
                imageLoadedOrExisted = true; // Image already exists in cache
                // LogToFile("AddOrUpdatePointer: Image '%ls' found in cache.", wsImagePath.c_str());
            }
        }
        catch (...) { // Catch potential exceptions from std::map or std::wstring itself
            LeaveCriticalSection(&g_imageCacheCritSec); // Ensure leave on exception
            LogToFile("AddOrUpdatePointer: *** CRITICAL EXCEPTION in Image Cache block! ***");
            return E_FAIL; // Return failure
        }
        LeaveCriticalSection(&g_imageCacheCritSec); // Leave normally
        // --- Image Cache Unlocked ---

if (FAILED(hr)) {
            LogToFile("AddOrUpdatePointer: Bailing out due to image load/cache failure.");
            return hr;
        }

// --- Update Pointer Map (Protected by Pointers Critical Section) ---
        EnterCriticalSection(&g_pointersCritSec);
        try
        {
            // Only proceed if image is ready
            // No need for imageLoadedOrExisted check here due to FAILED(hr) check above
            RemotePointer& rp = g_remotePointers[userId]; // Get reference or create new entry
            rp.userName = userName;
            rp.position = { x, y };
            rp.imagePath = wsImagePath; // Store the path (key to the image cache)
            rp.displayWidth = desiredWidth;
            rp.displayHeight = desiredHeight;
            // Log moved outside lock
        }
        catch (const std::exception& e) {
            LeaveCriticalSection(&g_pointersCritSec); // Ensure leave on exception
            LogToFile("AddOrUpdatePointer: EXCEPTION Failed to update pointer map for '%ls': %s", userId, e.what());
            return E_FAIL; // Return failure
        }
        catch (...) {
            LeaveCriticalSection(&g_pointersCritSec); // Ensure leave on exception
            LogToFile("AddOrUpdatePointer: UNKNOWN EXCEPTION updating pointer map for '%ls'", userId);
            return E_FAIL; // Return failure
        }
        LeaveCriticalSection(&g_pointersCritSec); // Leave normally
        LogToFile("Updated pointer map for '%ls'.", userId); // Log success outside lock
        // --- Pointers Unlocked ---

// --- Trigger Repaint ---
        if (g_overlayShown.load()) {
            LogToFile("AddOrUpdatePointer: Triggering InvalidateRect.");
            for (HWND hwnd : g_overlayWindows) {
                if (IsWindow(hwnd)) { InvalidateRect(hwnd, NULL, TRUE); }
            }
        }
        else {
            LogToFile("AddOrUpdatePointer: Overlay not shown, repaint not triggered.");
        }

return S_OK; // Return success
    }

COVINCEWINDOWSOVERLAY_API HRESULT __cdecl RemovePointer(const wchar_t* userId)
    {
        // --- ADD INITIALIZATION CHECK AT THE VERY START ---
        if (!g_dllInitializedOk.load(std::memory_order_acquire)) // Use acquire load for visibility
        {
            OutputDebugStringA("RemovePointer called but DLL not initialized!\n"); // Safer log here
            return COVINCE_E_NOT_INITIALIZED;
        }
        // --- END INITIALIZATION CHECK ---
        LogToFile("RemovePointer START for UserID: '%ls'", userId ? userId : L"NULL");
        if (!userId) {
            LogToFile("RemovePointer ERROR: Null userId provided.");
            return E_POINTER;
        }

size_t erasedCount = 0;

// --- Remove from Pointer Map (Protected by Critical Section) ---
        EnterCriticalSection(&g_pointersCritSec); // *** ENTER CS ***
        try
        {
            // Attempt to erase the element from the map
            erasedCount = g_remotePointers.erase(userId);
            // Logging about success/failure moved after Leave
        }
        catch (const std::exception& e)
        {
            // Log error if std::map::erase throws (unlikely for standard types unless memory issue)
            LeaveCriticalSection(&g_pointersCritSec); // *** LEAVE CS on exception ***
            LogToFile("RemovePointer: EXCEPTION during map erase for '%ls': %s", userId, e.what());
            // Decide on return code - maybe still try to repaint? Returning error seems appropriate.
            return E_FAIL;
        }
        catch (...)
        {
            LeaveCriticalSection(&g_pointersCritSec); // *** LEAVE CS on exception ***
            LogToFile("RemovePointer: UNKNOWN EXCEPTION during map erase for '%ls'", userId);
            return E_FAIL;
        }
        LeaveCriticalSection(&g_pointersCritSec); // *** LEAVE CS on normal path ***
        // --- Pointer Map Unlocked ---

// Log result after lock is released
        LogToFile(erasedCount > 0 ? "Removed pointer '%ls' from map." : "Pointer '%ls' not found in map.", userId);

// --- Trigger Repaint ---
        // We don't automatically remove from the image cache when a single pointer is removed
        // using the simple caching strategy (only clear cache in HideOverlay/ClearAllPointers).
        if (erasedCount > 0 && g_overlayShown.load()) {
            LogToFile("RemovePointer: Triggering InvalidateRect.");
            for (HWND hwnd : g_overlayWindows) {
                if (IsWindow(hwnd)) { InvalidateRect(hwnd, NULL, TRUE); }
            }
        }

// It's generally fine to return S_OK even if the pointer wasn't found (idempotent delete)
        return S_OK;
    }

COVINCEWINDOWSOVERLAY_API HRESULT __cdecl ClearAllPointers()
    {
        // --- ADD INITIALIZATION CHECK AT THE VERY START ---
        if (!g_dllInitializedOk.load(std::memory_order_acquire)) // Use acquire load for visibility
        {
            OutputDebugStringA("ClearAllPointers called but DLL not initialized!\n"); // Safer log here
            return COVINCE_E_NOT_INITIALIZED;
        }
        // --- END INITIALIZATION CHECK ---
        LogToFile("ClearAllPointers START");
        bool hadPointers = false;
        HRESULT pointerClearHr = S_OK;
        HRESULT cacheClearHr = S_OK;

// --- Clear Pointer Map ---
        EnterCriticalSection(&g_pointersCritSec);
        try {
            hadPointers = !g_remotePointers.empty();
            if (hadPointers) g_remotePointers.clear();
        }
        catch (const std::exception& e) {
            LogToFile("ClearAllPointers: EXCEPTION clearing pointer map: %s", e.what());
            pointerClearHr = E_FAIL; // Mark error but continue
        }
        catch (...) {
            LogToFile("ClearAllPointers: UNKNOWN EXCEPTION clearing pointer map!");
            pointerClearHr = E_FAIL; // Mark error but continue
        }
        LeaveCriticalSection(&g_pointersCritSec); // Leave AFTER try/catch
        if (SUCCEEDED(pointerClearHr) && hadPointers) LogToFile("Cleared pointer map.");

// --- Clear Image Cache ---
        EnterCriticalSection(&g_imageCacheCritSec);
        try {
            if (!g_imageCache.empty()) {
                ClearImageCacheInternal(); // Helper deletes bitmaps and logs
            }
            else {
                // LogToFile("ClearAllPointers: Image cache already empty.");
            }
        }
        catch (const std::exception& e) {
            LogToFile("ClearAllPointers: EXCEPTION clearing image cache: %s", e.what());
            cacheClearHr = E_FAIL; // Mark error
        }
        catch (...) {
            LogToFile("ClearAllPointers: UNKNOWN EXCEPTION clearing image cache!");
            cacheClearHr = E_FAIL; // Mark error
        }
        LeaveCriticalSection(&g_imageCacheCritSec); // Leave AFTER try/catch

// --- Trigger Repaint ---
        if (hadPointers && g_overlayShown.load()) {
            LogToFile("ClearAllPointers: Triggering InvalidateRect.");
            for (HWND hwnd : g_overlayWindows) {
                if (IsWindow(hwnd)) { InvalidateRect(hwnd, NULL, TRUE); }
            }
        }

// Return success unless something failed during cleanup
        return FAILED(pointerClearHr) || FAILED(cacheClearHr) ? E_FAIL : S_OK;
    }

#ifdef __cplusplus
}

#endif

static BOOL InitializeCriticalSections() 
{
    OutputDebugStringA("===> Initializing Critical Sections...\n");
    // InitializeCriticalSectionAndSpinCount returns BOOL (non-zero for success, zero for failure)
    // We want to return TRUE only if ALL succeed.
    BOOL cs1_ok = InitializeCriticalSectionAndSpinCount(&g_pointersCritSec, 0x00000400);
    BOOL cs2_ok = InitializeCriticalSectionAndSpinCount(&g_imageCacheCritSec, 0x00000400);
    BOOL cs3_ok = InitializeCriticalSectionAndSpinCount(&g_logCritSec, 0x00000400);

if (cs1_ok && cs2_ok && cs3_ok) 
    {
        OutputDebugStringA("===> Critical Sections Initialized OK.\n");
        return TRUE; // All succeeded
    }
    else 
    {
        // Log which one(s) failed if possible/needed for more detail
        if (!cs1_ok) OutputDebugStringA("===> g_pointersCritSec FAILED to Initialize!\n");
        if (!cs2_ok) OutputDebugStringA("===> g_imageCacheCritSec FAILED to Initialize!\n");
        if (!cs3_ok) OutputDebugStringA("===> g_logCritSec FAILED to Initialize!\n");
        OutputDebugStringA("===> Critical Sections FAILED to Initialize!\n");
        return FALSE; // At least one failed
    }
}

static void DeleteCriticalSections() 
{
    OutputDebugStringA("===> Deleting Critical Sections...\n");
    DeleteCriticalSection(&g_pointersCritSec);
    DeleteCriticalSection(&g_imageCacheCritSec);
    DeleteCriticalSection(&g_logCritSec);
    OutputDebugStringA("===> Critical Sections Deleted.\n");
}

//Maak de log in dezelfde forlder als  waar de images komen te staan, via de global constants
// Refined DllMain using only OutputDebugStringA for its own tracing
BOOL APIENTRY DllMain(HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserved)
{
    switch (ul_reason_for_call)
    {
        case DLL_PROCESS_ATTACH:
        { 
            // This *should* appear now based on the minimal test
            OutputDebugStringA("===> 1  DLL_PROCESS_ATTACH Entry\n");

// --- Debug GDI+ Initialization ---
            OutputDebugStringA("===> DBG: Attempting GdiplusStartup...\n");
            Status gdiplusStatus = GdiplusStartup(&g_gdiplusToken, &g_gdiplusStartupInput, NULL);
            if (gdiplusStatus == Ok)
            {
                OutputDebugStringA("===> DBG: GdiplusStartup SUCCEEDED.\n");
            }
            else
            {
                // Log the specific error before returning FALSE
                char errMsg[128];
                sprintf_s(errMsg, sizeof(errMsg), "===> DBG: GdiplusStartup FAILED! Status Code: %d. Returning FALSE from DllMain.\n", gdiplusStatus);
                OutputDebugStringA(errMsg);
                return FALSE; // Exit DLL load on GDI+ failure
            }

// --- Debug Critical Section Initialization ---
            OutputDebugStringA("===> DBG: Attempting InitializeCriticalSections...\n");
            BOOL csInitOk = InitializeCriticalSections(); // Ensure this function exists and is correct
            if (csInitOk)
            {
                OutputDebugStringA("===> DBG: InitializeCriticalSections SUCCEEDED.\n");
            }
            else
            {
                // Log the failure before returning FALSE
                OutputDebugStringA("===> DBG: InitializeCriticalSections FAILED! Returning FALSE from DllMain.\n");
                return FALSE; // Exit DLL load on CS failure
            }

// If both succeeded, we should reach here
            OutputDebugStringA("===> DBG: All initializations passed. Setting g_dllInitializedOk.\n");
            g_dllInitializedOk = true; // Set flag only if everything succeeded
            OutputDebugStringA("===> 5  DLL_PROCESS_ATTACH Exit (Success)\n"); // Original log message
            break; // Break from case DLL_PROCESS_ATTACH

/*
            OutputDebugStringA("===> 1  DLL_PROCESS_ATTACH Entry\n");

Status gdiplusStatus;
            OutputDebugStringA("===> 2  Calling GdiplusStartup...\n");
            gdiplusStatus = GdiplusStartup(&g_gdiplusToken, &g_gdiplusStartupInput, NULL);
            OutputDebugStringA("===> 3  GdiplusStartup Returned\n");
            if (gdiplusStatus == Ok) {
                OutputDebugStringA("===> 4A GdiplusStartup Status: OK\n");
            }
            else {
                char errMsg[100];
                sprintf_s(errMsg, "===> 4B GdiplusStartup Status: FAILED! Code: %d\n", gdiplusStatus);
                OutputDebugStringA(errMsg);
                // return FALSE; // Optional: Fail DLL load if GDI+ failed
            }

// Call the helper function
            if (!InitializeCriticalSections()) 
            {
                OutputDebugStringA("!!! DllMain returning FALSE due to Critical Section init failure!\n");
                return FALSE; // Return FALSE from DllMain to indicate DLL load failure
                // This prevents the DLL from being used if essential sync primitives fail
            }

OutputDebugStringA("===> 5  DLL_PROCESS_ATTACH Exit\n");
            g_dllInitializedOk = true;
            break; // Break remains inside the block
            */
        } // <-- ADD closing brace HERE

case DLL_THREAD_ATTACH:
            // Avoid complex operations here
            break;

case DLL_THREAD_DETACH:
            // Avoid complex operations here
            break;

case DLL_PROCESS_DETACH:
        {
            OutputDebugStringA("===> DBG: DLL_PROCESS_DETACH received.\n");

HideOverlay(); // Clean up windows and associated maps/cache

// Shutdown Logging - Calls the helper which now uses CS internally
            ShutdownLoggingInternal();

DeleteCriticalSections(); // Call the cleanup helper

OutputDebugStringA("===> B Calling GdiplusShutdown...\n");
            GdiplusShutdown(g_gdiplusToken);
            OutputDebugStringA("===> C GdiplusShutdown Returned\n");
            OutputDebugStringA("===> D DLL_PROCESS_DETACH Exit\n");
            break;
        } // <-- Add closing brace HERE
    } // End switch
    return TRUE; // Must return TRUE for successful attach
}

WindowsOverlayController.cs

C#copy raw

using UnityEngine;
using System; // For IntPtr - No longer needed here
using System.Diagnostics; // For Process - Keep if Watchdog re-enabled
using Debug = UnityEngine.Debug; // Keep alias
using Screen = UnityEngine.Screen; // Use UnityEngine.Screen directly
using System.IO; // For Path.Combine

// Make sure NativeOverlayInterface, OverlayHResult, CoVinceOverlayTextAlignment are accessible

// TODO, when start videorecording, get red border, then start screenshare, still red border
// after stop  recording, and still  screenshare, need to get green border

public class WindowsOverlayController : MonoBehaviour // Assuming _BaseController provides log/logError instance methods
{
    // --- Static Coordination State for Border ---
    // These track the *requests* for showing the border overlay for different reasons
    private static bool s_isOverlayActive = false; // Tracks if the border overlay window is currently shown via this coordinator
    private static bool s_isOverlayForRecording = false;
    private static bool s_isOverlayForSharing = false;

// --- Instance Variables ---
    // These might be set if multiple instances are used, determines THIS instance's purpose
    public bool isForRecording;
    //private Process watchdogProcess; // Keep if needed later
    private int displayNumber = 0; // Monitor index this instance relates to (if needed)

// Test variables - keep for Update() test code
    private bool useTestControls = true; // Toggle testing via Inspector
    public bool showText = false;
    public int fontSize = 20;

// Define image paths using StreamingAssets for build compatibility
    private string imagePath1;
    private string imagePath2;

public CoVinceOverlayTextAlignment textAlignment = CoVinceOverlayTextAlignment.TOP;

private void Awake()
    {
        //C:/ Users / denni / AppData / LocalLow / DefaultCompany / covinceplatform
       // log ($"[WindowsOverlayController] Awake - Show File Path: " + GlobalConstants.DATA_FOLDERPATH);
    //    imagePath1 = Path.Combine(GlobalConstants.DATA_FOLDERPATH, "Images", "BurgerTEST.png");
    //    imagePath2 = Path.Combine(GlobalConstants.DATA_FOLDERPATH, "Images", "PizzaTEST.png");
    }

// --- Unity Lifecycle ---

// OnEnable can potentially signal intent if needed, but OnDestroy is more critical
    // private void OnEnable() { }

private void OnDestroy()
    {
        // Signal that this instance's reason for showing the overlay is gone
        if (isForRecording)
        {
            s_isOverlayForRecording = false;
        }
        else // Assume it was for sharing if not for recording
        {
            s_isOverlayForSharing = false;
        }

// Update the appearance based on remaining requests
        UpdateOverlayAppearance(displayNumber); // Pass monitor index needed by ShowOverlayOnMonitor

// Watchdog cleanup remains commented
    }

void OnApplicationQuit()
    {
        // Clear all requests on quit
        s_isOverlayForRecording = false;
        s_isOverlayForSharing = false;

// Hide overlay explicitly on quit as a safety measure
        // (although DllMain DETACH also calls HideOverlay)
        OverlayHResult result = NativeOverlayInterface.HideOverlay();
        if (result != OverlayHResult.S_OK)
        {
            // Use instance logger if available, otherwise Debug.LogError
            //logError($"[WindowsOverlayController] OnApplicationQuit - HideOverlay failed (might be ok). HRESULT: 0x{(int)result:X}");
        }
    }

// --- Static Coordination Logic for Border ---

/// <summary>
    /// Checks the static flags and calls the Native Interface to show/hide/update
    /// the border overlay based on priority (Recording > Sharing > Hidden).
    /// </summary>
    private static void UpdateOverlayAppearance(int displayNr)
    {
        // Ensure DLL is ready before calling its functions
        if (!NativeOverlayInterface.IsSupportedPlatform) return;

int desiredState = 0; // 0 = Hidden, 1 = ShareScreen (Green), 2 = Recording (Red)
        Color desiredColor = Color.black;
        int desiredBorderWidth = 0;

// Determine highest priority active state
        if (s_isOverlayForRecording)
        {
            desiredState = 2;
            desiredColor = Color.red;
            desiredBorderWidth = 15; // Example width
        }
        else if (s_isOverlayForSharing)
        {
            desiredState = 1;
            desiredColor = Color.green;
            desiredBorderWidth = 10; // Example width
        }
        // else desiredState remains 0 (Hidden)

// Call DLL via NativeOverlayInterface based on desired state
        OverlayHResult result;
        if (desiredState > 0) // Show or Update
        {
            // Call ShowOverlayOnMonitor - this function in the DLL handles both showing initially
            // and updating the state (color/width) because it calls HideOverlay internally first.
            result = NativeOverlayInterface.ShowOverlayOnMonitor(
                displayNr,          // Target monitor
                "",                 // No text for border overlay
                false,              // No text
                desiredBorderWidth,
                desiredColor,       // Pass Color struct
                1,                  // Dummy font size
                0                   // Dummy alignment
            );

if (result == OverlayHResult.S_OK)
            {
                s_isOverlayActive = true;
            }
            else
            {
                // Use Debug.LogError as this is a static method
                //logError($"[WindowsOverlayController] UpdateOverlayAppearance - Static Update: Failed to show/update overlay. HRESULT: 0x{(int)result:X}");
                //Debug.LogError($"[WindowsOverlayController] UpdateOverlayAppearance - Static Update: Failed to show/update overlay. HRESULT: 0x{(int)result:X}");
            }
        }
        else // Hide
        {
            if (s_isOverlayActive) // Only hide if coordinator thinks it's active
            {
                result = NativeOverlayInterface.HideOverlay();
                if (result == OverlayHResult.S_OK)
                {
                    s_isOverlayActive = false;
                }
                else
                {
                    // Use Debug.LogError
                    //logError($"[WindowsOverlayController] UpdateOverlayAppearance - Static Update: Failed to hide the overlay. HRESULT: 0x{(int)result:X}");
                    //Debug.LogError($"[WindowsOverlayController] UpdateOverlayAppearance - Static Update: Failed to hide the overlay. HRESULT: 0x{(int)result:X}");
                }
            }
        }
    }

// --- Public Methods to Control Border State ---

/// <summary>
    /// Call this to signal the start of recording or sharing.
    /// </summary>
    public void showBorder(bool isForRecordingOverlay, int displayIndex = 0)
    {
        this.isForRecording = isForRecordingOverlay; // Store purpose of this instance
        this.displayNumber = displayIndex;

if (isForRecordingOverlay)
        {
            s_isOverlayForRecording = true;
        }
        else
        {
            s_isOverlayForSharing = true;
        }
        UpdateOverlayAppearance(displayNumber);
    }

/// <summary>
    /// Call this to signal the end of recording or sharing associated with this instance.
    /// </summary>
    public void hideBorder()
    {
        if (isForRecording)
        {
            s_isOverlayForRecording = false;
        }
        else
        {
            s_isOverlayForSharing = false;
        }
        // Reset instance flags
        isForRecording = false;
        // Don't reset displayNumber? Or maybe set to 0?

UpdateOverlayAppearance(displayNumber);
    }

// --- Direct DLL Wrappers (Optional - Can call NativeOverlayInterface directly elsewhere) ---
    // These just pass calls through and log errors using the instance logger

public void showOverlayText(bool show)
    {
        OverlayHResult result = NativeOverlayInterface.ShowOverlayText(show);
        if (result != OverlayHResult.S_OK)
        {
            //logError($"[WindowsOverlayController] ShowOverlayText - Failed. HRESULT: 0x{(int)result:X}");
        }
    }

public void updateOverlayText(string newOverlayText)
    {
        OverlayHResult result = NativeOverlayInterface.UpdateOverlayText(newOverlayText);
        if (result != OverlayHResult.S_OK)
        {
            //logError($"[WindowsOverlayController] UpdateOverlayText - Failed. HRESULT: 0x{(int)result:X}");
        }
    }

public void updateOverlayTextSize(int newTextSize)
    {
        OverlayHResult result = NativeOverlayInterface.UpdateOverlayFontSize(newTextSize);
        if (result != OverlayHResult.S_OK)
        {
            //logError($"[WindowsOverlayController] UpdateOverlayTextSize - Failed. HRESULT: 0x{(int)result:X}");
        }
    }

public void updateOverlayBorderColor(Color newBorderColor)
    {
        OverlayHResult result = NativeOverlayInterface.UpdateOverlayColor(newBorderColor);
        if (result != OverlayHResult.S_OK)
        {
            //logError($"[WindowsOverlayController] UpdateOverlayBorderColor - Failed. HRESULT: 0x{(int)result:X}");
        }
    }

public void updateOverlayBorderWidth(int newBorderWidth)
    {
        OverlayHResult result = NativeOverlayInterface.UpdateOverlayWidth(newBorderWidth);
        if (result != OverlayHResult.S_OK)
        {
            //logError($"[WindowsOverlayController] UpdateOverlayBorderWidth - Failed. HRESULT: 0x{(int)result:X}");
        }
    }

public void updateOverlayTextAlignment(CoVinceOverlayTextAlignment alignment)
    {
        OverlayHResult result = NativeOverlayInterface.UpdateOverlayAlignment(alignment);
        if (result != OverlayHResult.S_OK)
        {
            //logError($"[WindowsOverlayController] UpdateOverlayTextAlignment - Failed. HRESULT: 0x{(int)result:X}");
        }
    }

// --- Pointer Wrappers (Can call NativeOverlayInterface directly elsewhere) ---

public void addOrUpdatePointer(string userId, string userName, int x, int y, string imagePath, int desiredWidth, int desiredHeight)
    {
        OverlayHResult result = NativeOverlayInterface.AddOrUpdatePointer(userId, userName, x, y, imagePath, desiredWidth, desiredHeight);
        if (result != OverlayHResult.S_OK)
        {
            //logError($"[WindowsOverlayController] AddOrUpdatePointer - Failed for {userId}. HRESULT: 0x{(int)result:X}");
        }
    }

public void removePointer(string userId)
    {
        OverlayHResult result = NativeOverlayInterface.RemovePointer(userId);
        if (result != OverlayHResult.S_OK)
        { // Check if RemovePointer returns error on failure
            //logError($"[WindowsOverlayController] RemovePointer - Failed for {userId}. HRESULT: 0x{(int)result:X}");
        }
    }

public void clearAllPointers()
    {
        OverlayHResult result = NativeOverlayInterface.ClearAllPointers();
        if (result != OverlayHResult.S_OK)
        { // Check if ClearAllPointers returns error on failure
            //logError($"[WindowsOverlayController] ClearAllPointers - Failed. HRESULT: 0x{(int)result:X}");
        }
    }

// --- Update Method for Testing ---
    
    void Update()
    {
        // Only run test controls if enabled via inspector
        if (!useTestControls) return;

// Check if the platform is supported by the native plugin
        if (!NativeOverlayInterface.IsSupportedPlatform) return;

// --- Test Pointer Controls ---
        if (Input.GetKey(KeyCode.LeftControl) && Input.GetMouseButton(0))
        {
            int mouseX = (int)Input.mousePosition.x;
            int mouseY = (int)(Screen.height - Input.mousePosition.y); // Flip Y for screen coords
            // Using instance method which calls static interface method
            addOrUpdatePointer("TestUser1", "Dennis 1", mouseX, mouseY, imagePath1, 64, 64);
        }
        if (Input.GetKeyUp(KeyCode.LeftControl) || Input.GetMouseButtonUp(0)) // Basic stop on key/mouse release
        {
            removePointer("TestUser1");
        }

if (Input.GetKeyDown(KeyCode.I))
        {
            string imagePath1 = @"C:\Users\denni\AppData\LocalLow\DefaultCompany\covinceplatform\Images\BurgerTEST.png"; // Use verbatim path
            string imagePath2 = @"C:\Users\denni\AppData\LocalLow\DefaultCompany\covinceplatform\Images\PizzaTEST.png"; // Use verbatim path
            // Verify paths before calling
            //log($"DLL Image Path 1: {imagePath1}");
            //log($"DLL Image Path 2: {imagePath2}");
            //if (!System.IO.File.Exists(imagePath1)) logError("Burger Image NOT FOUND");
            //if (!System.IO.File.Exists(imagePath2)) logError("Pizza Image NOT FOUND");

addOrUpdatePointer("TestUser1", "Dennis 1", 100, 200, imagePath1, 128, 128);
            addOrUpdatePointer("TestUser2", "Dennis 2", 400, 600, imagePath2, 64, 64);
        }

if (Input.GetKeyDown(KeyCode.O)) { removePointer("TestUser2"); }
        if (Input.GetKeyDown(KeyCode.P)) { clearAllPointers(); }

// --- Test Border Controls (Using public Show/Hide Border methods) ---
        if (Input.GetKeyDown(KeyCode.R))
        {
            // Simulate starting recording (Red border)
            showBorder(true, 0); // Pass true for recording, monitor 0
            //log("Test: Show Recording Border requested.");
        }
        if (Input.GetKeyDown(KeyCode.G))
        {
            // Simulate starting sharing (Green border)
            showBorder(false, 0); // Pass false for sharing, monitor 0
            //log("Test: Show Sharing Border requested.");
        }
        if (Input.GetKeyDown(KeyCode.X))
        {
            // Simulate stopping whatever THIS instance was responsible for
            hideBorder();
            //log("Test: Hide Border requested.");
        }

// Test direct Update calls (Using public wrapper methods)
        if (Input.GetKeyDown(KeyCode.B)) { updateOverlayBorderColor(Color.blue); }
        if (Input.GetKeyDown(KeyCode.W)) { updateOverlayBorderWidth(UnityEngine.Random.Range(5, 25)); } // Example width change
        if (Input.GetKeyDown(KeyCode.H)) { showOverlayText(!showText); showText = !showText; } // Toggle text visibility
        if (Input.GetKeyDown(KeyCode.T)) { updateOverlayText($"Test {Time.time:F1}"); }

// Alignment cycle remains complex, keep as is for testing if needed
        if (Input.GetKeyDown(KeyCode.A))
        {
            textAlignment = textAlignment switch
            {
                // If current is Center (CENTER | VCENTER), next is Top (CENTER | TOP)
                CoVinceOverlayTextAlignment.CENTER | CoVinceOverlayTextAlignment.VCENTER =>
                    CoVinceOverlayTextAlignment.CENTER | CoVinceOverlayTextAlignment.TOP,

// If current is Top (CENTER | TOP), next is Top Right (RIGHT | TOP)
                CoVinceOverlayTextAlignment.CENTER | CoVinceOverlayTextAlignment.TOP =>
                    CoVinceOverlayTextAlignment.CENTER | CoVinceOverlayTextAlignment.VCENTER,

// If current is Top Right (RIGHT | TOP), next is Right (RIGHT | VCENTER)
                CoVinceOverlayTextAlignment.RIGHT | CoVinceOverlayTextAlignment.TOP =>
                    CoVinceOverlayTextAlignment.RIGHT | CoVinceOverlayTextAlignment.VCENTER,

// If current is Right (RIGHT | VCENTER), next is Bottom Right (RIGHT | BOTTOM)
                CoVinceOverlayTextAlignment.RIGHT | CoVinceOverlayTextAlignment.VCENTER =>
                    CoVinceOverlayTextAlignment.RIGHT | CoVinceOverlayTextAlignment.BOTTOM,

// If current is Bottom Right (RIGHT | BOTTOM), next is Bottom (CENTER | BOTTOM)
                CoVinceOverlayTextAlignment.RIGHT | CoVinceOverlayTextAlignment.BOTTOM =>
                    CoVinceOverlayTextAlignment.CENTER | CoVinceOverlayTextAlignment.BOTTOM,

// If current is Bottom (CENTER | BOTTOM), next is Bottom Left (LEFT | BOTTOM)
                CoVinceOverlayTextAlignment.CENTER | CoVinceOverlayTextAlignment.BOTTOM =>
                    CoVinceOverlayTextAlignment.LEFT | CoVinceOverlayTextAlignment.BOTTOM,

// If current is Bottom Left (LEFT | BOTTOM), next is Left (LEFT | VCENTER)
                CoVinceOverlayTextAlignment.LEFT | CoVinceOverlayTextAlignment.BOTTOM =>
                    CoVinceOverlayTextAlignment.LEFT | CoVinceOverlayTextAlignment.VCENTER,

// If current is Left (LEFT | VCENTER), next is Top Left (LEFT | TOP)
                CoVinceOverlayTextAlignment.LEFT | CoVinceOverlayTextAlignment.VCENTER =>
                    CoVinceOverlayTextAlignment.LEFT | CoVinceOverlayTextAlignment.TOP,

// If current is Top Left (LEFT | TOP), next is Center (CENTER | VCENTER)
                CoVinceOverlayTextAlignment.LEFT | CoVinceOverlayTextAlignment.TOP =>
                    CoVinceOverlayTextAlignment.CENTER | CoVinceOverlayTextAlignment.VCENTER,

// Default case (e.g., if starting state wasn't one of the above) -> go to Center (CENTER | VCENTER)
                _ => CoVinceOverlayTextAlignment.CENTER | CoVinceOverlayTextAlignment.VCENTER,
            };

updateOverlayTextAlignment(textAlignment);
            //log($"Test: Alignment Changed to {(int)textAlignment} ({textAlignment})");
        }
        if (Input.GetKeyDown(KeyCode.F))
        {
            fontSize += 2;
            updateOverlayTextSize(fontSize);
            //log($"Test: Font Size Changed to {fontSize}");
        }

} // End Update()

} // End Class

NativeOverlayInterface.cs

C#copy raw

using System.Runtime.InteropServices;
using UnityEngine; // For Debug.LogWarning, Color
using System;     // For IntPtr

// Define C# equivalent of your custom enum from C++ header
// Place this outside the static class if other scripts need it directly
public enum CoVinceOverlayTextAlignment
{
    LEFT = 0x01,
    CENTER = 0x02,
    RIGHT = 0x04,
    TOP = 0x08,
    VCENTER = 0x10,
    BOTTOM = 0x20
}

// Define C# equivalent of your HRESULTs from C++ header
// Place this outside the static class if other scripts need it directly
public enum OverlayHResult : int
{
    // Standard Success
    S_OK = 0,

// Standard Errors (Use unchecked cast for negative hex literals)
    E_FAIL = unchecked((int)0x80004005),
    E_POINTER = unchecked((int)0x80004003),
    E_INVALIDARG = unchecked((int)0x80070057),
    E_OUTOFMEMORY = unchecked((int)0x8007000E),
    E_NOTIMPL = unchecked((int)0x80004001), // Not Implemented

// Custom Errors (Calculated from MAKE_HRESULT(1, 19, code))
    COVINCE_E_WINDOW_CREATION_FAILED = unchecked((int)0x80130001), // Code 1
    COVINCE_E_ALREADY_INITIALIZED = unchecked((int)0x80130002), // Code 2 (Maybe unused)
    COVINCE_E_NOT_INITIALIZED = unchecked((int)0x80130003), // Code 3
    COVINCE_E_INVALID_MONITOR_INDEX = unchecked((int)0x80130004), // Code 4
    COVINCE_E_STRING_COPY_FAILED = unchecked((int)0x80130005), // Code 5
    COVINCE_E_TEXT_TOO_LONG = unchecked((int)0x80130006), // Code 6
    COVINCE_E_CLASS_REGISTRATION_FAILED = unchecked((int)0x80130007), // Code 7
    COVINCE_E_GENERIC_ERROR = unchecked((int)0x80130064)  // Code 100
}

/// <summary>
/// Static wrapper class for interacting with the native CoVince Windows Overlay DLL.
/// Handles platform checks and provides safe methods.
/// Only functional on Windows Editor (x64) and Windows Standalone (x64).
/// </summary>
public static class NativeOverlayInterface
{
    // --- Determine Platform Support and DLL Name ---
#if UNITY_EDITOR_WIN && UNITY_64
    // Windows Editor 64-bit: Use Debug 64-bit DLL
    private const string DllName = "CoVinceWindowsOverlay_DB_x64";
    private const bool _IsSupported = true;

#elif UNITY_STANDALONE_WIN && UNITY_STANDALONE_WIN64
     // Standalone Windows 64-bit ONLY: Use Release 64-bit DLL
     private const string DllName = "CoVinceWindowsOverlay_RL_x64";
     private const bool _IsSupported = true;

#else
     // All other platforms OR unsupported Windows architectures (e.g., x86 Standalone)
     private const string DllName = "BuildTargetNotSupported"; // Dummy name
     private const bool _IsSupported = false;
#endif

// Public property to check support from other scripts
    public static bool IsSupportedPlatform => _IsSupported;

// --- Actual DLL Imports (Only declared on supported targets) ---
#if UNITY_EDITOR_WIN || (UNITY_STANDALONE_WIN && UNITY_STANDALONE_WIN64)

[DllImport(DllName, CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl, EntryPoint = "ShowOverlay")]
    private static extern int ShowOverlay_Internal([MarshalAs(UnmanagedType.LPWStr)] string text, bool showText, int borderWidth, int r, int g, int b, int fontSize, int alignment);

[DllImport(DllName, CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl, EntryPoint = "ShowOverlayOnMonitor")]
    private static extern int ShowOverlayOnMonitor_Internal(int monitorIndex, [MarshalAs(UnmanagedType.LPWStr)] string text, bool showText, int borderWidth, int r, int g, int b, int fontSize, int alignment);

[DllImport(DllName, CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl, EntryPoint = "HideOverlay")]
    private static extern int HideOverlay_Internal();

[DllImport(DllName, CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl, EntryPoint = "ShowOverlayText")]
    private static extern int ShowOverlayText_Internal(bool show);

[DllImport(DllName, CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl, EntryPoint = "UpdateOverlayText")]
    private static extern int UpdateOverlayText_Internal([MarshalAs(UnmanagedType.LPWStr)] string text);

[DllImport(DllName, CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl, EntryPoint = "UpdateOverlayFontSize")]
    private static extern int UpdateOverlayFontSize_Internal(int fontSize);

[DllImport(DllName, CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl, EntryPoint = "UpdateOverlayWidth")]
    private static extern int UpdateOverlayWidth_Internal(int borderWidth);

[DllImport(DllName, CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl, EntryPoint = "UpdateOverlayColor")]
    private static extern int UpdateOverlayColor_Internal(int r, int g, int b);

[DllImport(DllName, CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl, EntryPoint = "UpdateOverlayAlignment")]
    private static extern int UpdateOverlayAlignment_Internal(int alignment); // Pass enum as int

[DllImport(DllName, CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl, EntryPoint = "AddOrUpdatePointer")]
    private static extern int AddOrUpdatePointer_Internal([MarshalAs(UnmanagedType.LPWStr)] string userId, [MarshalAs(UnmanagedType.LPWStr)] string userName, int x, int y, [MarshalAs(UnmanagedType.LPWStr)] string imagePath, int desiredWidth, int desiredHeight);

[DllImport(DllName, CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl, EntryPoint = "RemovePointer")]
    private static extern int RemovePointer_Internal([MarshalAs(UnmanagedType.LPWStr)] string userId);

[DllImport(DllName, CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl, EntryPoint = "ClearAllPointers")]
    private static extern int ClearAllPointers_Internal();

// Add any other necessary DllImports here...

#endif // End of Windows x64 / Editor specific DllImports

// --- Public Static Wrapper Methods (Defined for ALL platforms) ---
    // These provide a consistent API for other scripts to call.

public static OverlayHResult ShowOverlay(string text, bool showText, int borderWidth, Color color, int fontSize, CoVinceOverlayTextAlignment alignment)
    {
#if UNITY_EDITOR_WIN || (UNITY_STANDALONE_WIN && UNITY_STANDALONE_WIN64)
        int r = (int)(color.r * 255); int g = (int)(color.g * 255); int b = (int)(color.b * 255);
        int result = ShowOverlay_Internal(text ?? "", showText, borderWidth, r, g, b, fontSize, (int)alignment);
        if (result != 0) Debug.LogWarning($"ShowOverlay failed. HRESULT: 0x{result:X}");
        return (OverlayHResult)result;
#else
        Debug.LogWarning("NativeOverlayInterface.ShowOverlay not supported on this build target.");
        return OverlayHResult.E_NOTIMPL;
#endif
    }

public static OverlayHResult ShowOverlayOnMonitor(int monitorIndex, string text, bool showText, int borderWidth, Color color, int fontSize, CoVinceOverlayTextAlignment alignment)
    {
#if UNITY_EDITOR_WIN || (UNITY_STANDALONE_WIN && UNITY_STANDALONE_WIN64)
        int r = (int)(color.r * 255); int g = (int)(color.g * 255); int b = (int)(color.b * 255);
        int result = ShowOverlayOnMonitor_Internal(monitorIndex, text ?? "", showText, borderWidth, r, g, b, fontSize, (int)alignment);
        if (result != 0) Debug.LogWarning($"ShowOverlayOnMonitor failed for index {monitorIndex}. HRESULT: 0x{result:X}");
        return (OverlayHResult)result;
#else
        Debug.LogWarning("NativeOverlayInterface.ShowOverlayOnMonitor not supported on this build target.");
        return OverlayHResult.E_NOTIMPL;
#endif
    }

public static OverlayHResult HideOverlay()
    {
#if UNITY_EDITOR_WIN || (UNITY_STANDALONE_WIN && UNITY_STANDALONE_WIN64)
        int result = HideOverlay_Internal();
        if (result != 0) Debug.LogWarning($"HideOverlay failed. HRESULT: 0x{result:X}");
        return (OverlayHResult)result;
#else
        return OverlayHResult.S_OK; // Hiding non-existent overlay is fine
#endif
    }

public static OverlayHResult ShowOverlayText(bool show)
    {
#if UNITY_EDITOR_WIN || (UNITY_STANDALONE_WIN && UNITY_STANDALONE_WIN64)
        int result = ShowOverlayText_Internal(show);
        if (result != 0) Debug.LogWarning($"ShowOverlayText failed. HRESULT: 0x{result:X}");
        return (OverlayHResult)result;
#else
        return OverlayHResult.E_NOTIMPL;
#endif
    }

public static OverlayHResult UpdateOverlayText(string text)
    {
#if UNITY_EDITOR_WIN || (UNITY_STANDALONE_WIN && UNITY_STANDALONE_WIN64)
        int result = UpdateOverlayText_Internal(text ?? "");
        if (result != 0) Debug.LogWarning($"UpdateOverlayText failed. HRESULT: 0x{result:X}");
        return (OverlayHResult)result;
#else
        return OverlayHResult.E_NOTIMPL;
#endif
    }

public static OverlayHResult UpdateOverlayFontSize(int fontSize)
    {
#if UNITY_EDITOR_WIN || (UNITY_STANDALONE_WIN && UNITY_STANDALONE_WIN64)
        int result = UpdateOverlayFontSize_Internal(fontSize);
        if (result != 0) Debug.LogWarning($"UpdateOverlayFontSize failed. HRESULT: 0x{result:X}");
        return (OverlayHResult)result;
#else
        return OverlayHResult.E_NOTIMPL;
#endif
    }

public static OverlayHResult UpdateOverlayWidth(int borderWidth)
    {
#if UNITY_EDITOR_WIN || (UNITY_STANDALONE_WIN && UNITY_STANDALONE_WIN64)
        int result = UpdateOverlayWidth_Internal(borderWidth);
        if (result != 0) Debug.LogWarning($"UpdateOverlayWidth failed. HRESULT: 0x{result:X}");
        return (OverlayHResult)result;
#else
        return OverlayHResult.E_NOTIMPL;
#endif
    }

public static OverlayHResult UpdateOverlayColor(Color color)
    {
#if UNITY_EDITOR_WIN || (UNITY_STANDALONE_WIN && UNITY_STANDALONE_WIN64)
        int r = (int)(color.r * 255); int g = (int)(color.g * 255); int b = (int)(color.b * 255);
        int result = UpdateOverlayColor_Internal(r, g, b);
        if (result != 0) Debug.LogWarning($"UpdateOverlayColor failed. HRESULT: 0x{result:X}");
        return (OverlayHResult)result;
#else
        return OverlayHResult.E_NOTIMPL;
#endif
    }

public static OverlayHResult UpdateOverlayAlignment(CoVinceOverlayTextAlignment alignment)
    {
#if UNITY_EDITOR_WIN || (UNITY_STANDALONE_WIN && UNITY_STANDALONE_WIN64)
        int result = UpdateOverlayAlignment_Internal((int)alignment);
        if (result != 0) Debug.LogWarning($"UpdateOverlayAlignment failed. HRESULT: 0x{result:X}");
        return (OverlayHResult)result;
#else
        return OverlayHResult.E_NOTIMPL;
#endif
    }

public static OverlayHResult AddOrUpdatePointer(string userId, string userName, int x, int y, string imagePath, int desiredWidth, int desiredHeight)
    {
#if UNITY_EDITOR_WIN || (UNITY_STANDALONE_WIN && UNITY_STANDALONE_WIN64)
        int result = AddOrUpdatePointer_Internal(userId, userName ?? "Unknown", x, y, imagePath, desiredWidth, desiredHeight);
        // Don't log warning here by default, as E_FAIL from image load is expected if file missing
        // if (result != 0 && result != (int)OverlayHResult.E_FAIL) Debug.LogWarning($"AddOrUpdatePointer returned non-success HRESULT for {userId}: 0x{result:X}");
        return (OverlayHResult)result;
#else
        Debug.LogWarning("NativeOverlayInterface.AddOrUpdatePointer not supported on this build target.");
        return OverlayHResult.E_NOTIMPL;
#endif
    }

public static OverlayHResult RemovePointer(string userId)
    {
#if UNITY_EDITOR_WIN || (UNITY_STANDALONE_WIN && UNITY_STANDALONE_WIN64)
        int result = RemovePointer_Internal(userId);
        if (result != 0) Debug.LogWarning($"RemovePointer failed for {userId}. HRESULT: 0x{result:X}"); // S_OK expected even if not found
        return (OverlayHResult)result;
#else
         return OverlayHResult.E_NOTIMPL; // Or S_OK? E_NOTIMPL seems better.
#endif
    }

public static OverlayHResult ClearAllPointers()
    {
#if UNITY_EDITOR_WIN || (UNITY_STANDALONE_WIN && UNITY_STANDALONE_WIN64)
        int result = ClearAllPointers_Internal();
        if (result != 0) Debug.LogWarning($"ClearAllPointers failed. HRESULT: 0x{result:X}"); // Should likely return S_OK
        return (OverlayHResult)result;
#else
        return OverlayHResult.S_OK; // Clearing non-existent pointers is fine
#endif
    }

} // End Class

created at:

stats: 2189 lines, 9116 words, 95.91kb