void CleanupWindowCapture()
{
if (hdc != IntPtr.Zero)
{
Win32Funcs.ReleaseDC(hwnd, hdc);
hdc = IntPtr.Zero;
}
if (hDest != IntPtr.Zero)
{
Win32Funcs.DeleteDC(hDest);
hDest = IntPtr.Zero;
}
if (curRenderingBitmap != IntPtr.Zero)
{
Win32Funcs.DeleteObject(curRenderingBitmap);
curRenderingBitmap = IntPtr.Zero;
}
if (cursorHandle != IntPtr.Zero)
{
Win32Funcs.DeleteObject(cursorHandle);
cursorHandle = IntPtr.Zero;
}
}
public static void UpdateCursorInfo()
{
// TODO - make sure everything here is cleaned up properly?
// I'm pretty sure it is but it is good to check
//int x = 0, y = 0;
//return CaptureCursor (ref x, ref y);
Win32Types.CursorInfo ci = new Win32Types.CursorInfo();
ci.cbSize = Marshal.SizeOf(typeof(Win32Types.CursorInfo));
if (!Win32Funcs.GetCursorInfo(ref ci))
{
return;
}
// Todo: this will change if cursor icon changes (via http://stackoverflow.com/questions/358527/how-to-tell-if-mouse-pointer-icon-changed?rq=1),
// So then we can make more expensive and accurate cursor things and only update as needed
IntPtr cursorPointer = ci.hCursor;
cursorHandle = cursorPointer;
int iconWidth = Win32Funcs.GetSystemMetrics(Win32Consts.SystemMetric.SM_CXICON) + 1;
int iconHeight = Win32Funcs.GetSystemMetrics(Win32Consts.SystemMetric.SM_CYICON) + 1;
iconDims = new System.Drawing.Point(iconWidth, iconHeight);
Win32Types.IconInfo hotSpotInfo = new Win32Types.IconInfo();
Win32Funcs.GetIconInfo(cursorPointer, out hotSpotInfo);
//Win32funcs.DrawIcon(hdcBitmap, 1, 1, cursorPointer);
hotspot = new System.Drawing.Point(hotSpotInfo.xHotspot + 1, hotSpotInfo.yHotspot + 1);
if (hotSpotInfo.hbmColor != IntPtr.Zero)
{
Win32Funcs.DeleteObject(hotSpotInfo.hbmColor);
}
if (hotSpotInfo.hbmMask != IntPtr.Zero)
{
Win32Funcs.DeleteObject(hotSpotInfo.hbmMask);
}
Win32Types.PointL cursorPos;
Win32Funcs.GetCursorPos(out cursorPos);
int cursorX = cursorPos.x - hotspot.X;
int cursorY = cursorPos.y - hotspot.Y;
cursorRect = new Win32Types.RECT(cursorX, cursorY, cursorX + iconDims.X, cursorY + iconDims.Y);
}
void FreeWinCapture()
{
if (hdc != IntPtr.Zero)
{
Win32Funcs.ReleaseDC(hwnd, hdc);
hdc = IntPtr.Zero;
}
if (hDest != IntPtr.Zero)
{
Win32Funcs.DeleteDC(hDest);
hDest = IntPtr.Zero;
}
if (curRenderingBitmap != IntPtr.Zero)
{
Win32Funcs.DeleteObject(curRenderingBitmap);
curRenderingBitmap = IntPtr.Zero;
}
}
public byte[] GetWindowBitmapUsingBitBlt(out int numBytesPerRow)
{
windowRect = new Win32Types.RECT();
bool result;
if (isDesktop)
{
Win32Types.MonitorInfo mi = new Win32Types.MonitorInfo();
mi.cbSize = Marshal.SizeOf(mi);
result = Win32Funcs.GetMonitorInfo(hwnd, ref mi);
if (result)
{
windowRect = mi.rcMonitor;
}
}
else
{
// Get the size of the window
result = Win32Funcs.GetWindowRect(hwnd, out windowRect);
}
if (onlyCaptureMouse)
{
windowRect = cursorRect;
result = true;
}
if (!result)
{
// Failed getting rect
numBytesPerRow = 0;
return(null);
}
// If they resized the window we need to reinit the memory
if (windowWidth != windowRect.Width || windowHeight != windowRect.Height)
{
CleanupWindowCapture();
SetupWindowCapture();
windowWidth = windowRect.Width;
windowHeight = windowRect.Height;
}
oldhDest = Win32Funcs.SelectObject(hDest, curRenderingBitmap);
Win32Types.BITMAP bitmap = new Win32Types.BITMAP();
Win32Funcs.GetObjectBitmap(curRenderingBitmap, Marshal.SizeOf(bitmap), ref bitmap);
if (onlyCaptureMouse)
{
if (isDesktop)
{
Win32Funcs.BitBlt(hDest, 0, 0, cursorRect.Width, cursorRect.Height, hdc, windowRect.Left, windowRect.Top, Win32Consts.TernaryRasterOperations.SRCCOPY);
}
else
{
Win32Funcs.BitBlt(hDest, cursorRect.Left, cursorRect.Height, cursorRect.Width, cursorRect.Height, hdc, 0, 0, Win32Consts.TernaryRasterOperations.SRCCOPY);
}
Win32Funcs.DrawIconEx(hDest, 1, 1, cursorHandle, cursorRect.Width, cursorRect.Height, 0, IntPtr.Zero, Win32Consts.DI_NORMAL);
}
else
{
// Copy from the screen device context to the bitmap device context
var testing = false;
if (isDesktop)
{
Win32Funcs.BitBlt(hDest, 0, 0, windowRect.Width, windowRect.Height, hdc, windowRect.Left, windowRect.Top, Win32Consts.TernaryRasterOperations.SRCCOPY);
}
else
{
if (testing)
{
Win32Funcs.BitBlt(hDest, 0, 0, windowRect.Width, windowRect.Height, hdc, 0, 0, Win32Consts.TernaryRasterOperations.SRCCOPY);
}
else
{
if (needsGDIp)
{
Bitmap map = new Bitmap(windowRect.Width, windowRect.Height);
Graphics graphics = Graphics.FromHdc(hDest);
try
{
graphics.CopyFromScreen(new System.Drawing.Point(windowRect.Left, windowRect.Top), System.Drawing.Point.Empty, windowRect.Size, CopyPixelOperation.SourceCopy);
}
finally
{
map.Dispose();
graphics.Dispose();
}
}
}
}
Win32Funcs.DrawIconEx(hDest, cursorRect.Left, cursorRect.Top, cursorHandle, cursorRect.Width, cursorRect.Height, 0, IntPtr.Zero, Win32Consts.DI_NORMAL);
}
numBytesPerRow = bitmap.bmWidthBytes;
if (bitmapBytes == null || bitmapBytes.Length != bitmap.bmHeight * bitmap.bmWidthBytes)
{
bitmapBytes = new byte[bitmap.bmHeight * bitmap.bmWidthBytes];
}
if (bitmap.bmBits != IntPtr.Zero)
{
Marshal.Copy(bitmap.bmBits, bitmapBytes, 0, bitmapBytes.Length);
}
if (bitmapBytes == null || bitmapBytes.Length == 0)
{
return(null);
}
Win32Funcs.DeleteObject(bitmap.bmBits);
Win32Funcs.SelectObject(hDest, oldhDest);
return(bitmapBytes);
}
