private void setupInstance(IntPtr parentWindowHandle, Direct2DRendererOptions options)
{
ParentWindowHandle = parentWindowHandle;
if (PInvoke.IsWindow(parentWindowHandle) == 0)
{
throw new Exception("The parent window does not exist");
}
PInvoke.RECT bounds = new PInvoke.RECT();
PInvoke.GetRealWindowRect(parentWindowHandle, out bounds);
int x = bounds.Left;
int y = bounds.Top;
int width = bounds.Right - x;
int height = bounds.Bottom - y;
Window = new OverlayWindow(x, y, width, height);
options.Hwnd = Window.WindowHandle;
Graphics = new Direct2DRenderer(options);
serviceThread = new Thread(new ThreadStart(windowServiceThread))
{
IsBackground = true,
Priority = ThreadPriority.BelowNormal
};
serviceThread.Start();
}
private void windowServiceThread()
{
PInvoke.RECT bounds = new PInvoke.RECT();
while (!exitThread)
{
Thread.Sleep(100);
if (PInvoke.IsWindowVisible(ParentWindowHandle) == 0)
{
if (Window.IsVisible)
{
Window.HideWindow();
}
continue;
}
if (!Window.IsVisible)
{
Window.ShowWindow();
}
if (OverlayWindow.BypassTopmost)
{
IntPtr windowAboveParentWindow = PInvoke.GetWindow(ParentWindowHandle, 3 /* GW_HWNDPREV */);
if (windowAboveParentWindow != Window.WindowHandle)
{
PInvoke.SetWindowPos(Window.WindowHandle, windowAboveParentWindow, 0, 0, 0, 0, 0x10 | 0x2 | 0x1 | 0x4000); // SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE | SWP_ASYNCWINDOWPOS
}
}
PInvoke.GetRealWindowRect(ParentWindowHandle, out bounds);
int x = bounds.Left;
int y = bounds.Top;
int width = bounds.Right - x;
int height = bounds.Bottom - y;
if (Window.X == x &&
Window.Y == y &&
Window.Width == width &&
Window.Height == height)
{
continue;
}
Window.SetWindowBounds(x, y, width, height);
Graphics.Resize(width, height);
}
}