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(untitled)

HideOnHoverLogic

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internal class HideOnHoverLogic : Window
    {
        public Window AppWindow { get; set; }
        public FrameworkElement BorderContainer { get; set; }
        public HideOnHoverLogic(Window appWindow, FrameworkElement borderContainer)
        {
            MouseHook.Start();
            MouseHook.MouseAction += new EventHandler(OnHoverHide);
            AppWindow = appWindow;
            this.BorderContainer = borderContainer;
        }

[DllImport("user32.dll")]
        [return: MarshalAs(UnmanagedType.Bool)]

internal static extern bool GetCursorPos(ref Win32Point pt);

[StructLayout(LayoutKind.Sequential)]

internal struct Win32Point
        {
            public int X;
            public int Y;
        };

public static Point GetMousePosition()
        {
            var w32Mouse = new Win32Point();
            GetCursorPos(ref w32Mouse);

return new Point(w32Mouse.X, w32Mouse.Y);
        }

public void OnHoverHide(object? sender, EventArgs e)
        {
            Point MousePos = GetMousePosition();

Point TopLeftWindowPoint = new Point(AppWindow.Left, AppWindow.Top);
            Point BottomRightWindowPoint = new Point(AppWindow.Left + AppWindow.Width, AppWindow.Top + AppWindow.Height);

//If mouse isn't over window
            if (MousePos.X >= TopLeftWindowPoint.X && MousePos.Y >= TopLeftWindowPoint.Y)
            {
                if (MousePos.X <= BottomRightWindowPoint.X && MousePos.Y <= BottomRightWindowPoint.Y)
                {
                    BorderContainer.Opacity = 0;
                    return;
                }
            }

BorderContainer.Opacity = 1;
        }

public static class MouseHook
        {
            public static event EventHandler MouseAction = delegate { };

public static void Start()
            {
                _hookID = SetHook(_proc);

}
            public static void stop()
            {
                UnhookWindowsHookEx(_hookID);
            }

private static LowLevelMouseProc _proc = HookCallback;
            private static IntPtr _hookID = IntPtr.Zero;

private static IntPtr SetHook(LowLevelMouseProc proc)
            {
                using (Process curProcess = Process.GetCurrentProcess())
                using (ProcessModule curModule = curProcess.MainModule)
                {
                    return SetWindowsHookEx(WH_MOUSE_LL, proc,
                      GetModuleHandle(curModule.ModuleName), 0);
                }
            }

private delegate IntPtr LowLevelMouseProc(int nCode, IntPtr wParam, IntPtr lParam);

private static IntPtr HookCallback(
              int nCode, IntPtr wParam, IntPtr lParam)
            {
                if (nCode >= 0 && MouseMessages.WM_MOUSEMOVE == (MouseMessages)wParam)
                {
                    MSLLHOOKSTRUCT hookStruct = (MSLLHOOKSTRUCT)Marshal.PtrToStructure(lParam, typeof(MSLLHOOKSTRUCT));
                    MouseAction(null, new EventArgs());
                }
                return CallNextHookEx(_hookID, nCode, wParam, lParam);
            }

private const int WH_MOUSE_LL = 14;

private enum MouseMessages
            {
                WM_LBUTTONDOWN = 0x0201,
                WM_LBUTTONUP = 0x0202,
                WM_MOUSEMOVE = 0x0200,
                WM_MOUSEWHEEL = 0x020A,
                WM_RBUTTONDOWN = 0x0204,
                WM_RBUTTONUP = 0x0205
            }

[StructLayout(LayoutKind.Sequential)]
            private struct POINT
            {
                public int x;
                public int y;
            }

[StructLayout(LayoutKind.Sequential)]
            private struct MSLLHOOKSTRUCT
            {
                public POINT pt;
                public uint mouseData;
                public uint flags;
                public uint time;
                public IntPtr dwExtraInfo;
            }

[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
            private static extern IntPtr SetWindowsHookEx(int idHook,
              LowLevelMouseProc lpfn, IntPtr hMod, uint dwThreadId);

[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
            [return: MarshalAs(UnmanagedType.Bool)]
            private static extern bool UnhookWindowsHookEx(IntPtr hhk);

[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
            private static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode,
              IntPtr wParam, IntPtr lParam);

[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
            private static extern IntPtr GetModuleHandle(string lpModuleName);
        }
    }

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stats: 139 lines, 377 words, 4.84kb