public Bitmap captureDesktopBitmap()
{
Win32Functions.RECT windowRect = new Win32Functions.RECT();
IntPtr hWnd = new IntPtr(Win32Functions.GetDesktopWindow());
IntPtr hdcSrc = Win32Functions.GetWindowDC((int)hWnd);
Win32Functions.GetClientRect((int)hWnd, ref windowRect);
Win32Functions.WINDOWINFO window = new Win32Functions.WINDOWINFO();
window.cbSize = System.Runtime.InteropServices.Marshal.SizeOf(window);
Win32Functions.GetWindowInfo((int)hWnd, ref window);
// create a bitmap from the visible clipping bounds of
//the graphics object from the window
int width = windowRect.right - windowRect.left;
int height = windowRect.bottom - windowRect.top;
// create a device context we can copy to
IntPtr hdcDest = Win32Functions.CreateCompatibleDC(hdcSrc);
// create a bitmap we can copy it to,
// using GetDeviceCaps to get the width/height
IntPtr hBitmap = Win32Functions.CreateCompatibleBitmap(hdcSrc, width, height);
// select the bitmap object
IntPtr hOld = Win32Functions.SelectObject(hdcDest, hBitmap);
// bitblt over
Win32Functions.BitBlt(hdcDest, 0,
0, width, height, hdcSrc, window.rcClient.left - window.rcWindow.left,
window.rcClient.top - window.rcWindow.top,
Win32Defines.SRCCOPY);
// restore selection
Win32Functions.SelectObject(hdcDest, hOld);
// clean up
Win32Functions.DeleteDC(hdcDest);
Win32Functions.ReleaseDC(hWnd, hdcSrc);
// get a .NET Bitmap object for it
Bitmap bmp = new Bitmap(Image.FromHbitmap(hBitmap), new Size(width, height));
// free up the Bitmap object
Win32Functions.DeleteObject(hBitmap);
return(bmp);
}
public byte[] captureClientBytes(int HWND, int pwidth, int pheight)
{
Win32Functions.RECT windowRect = new Win32Functions.RECT();
IntPtr hWnd = new IntPtr(HWND);
IntPtr hdcSrc = Win32Functions.GetWindowDC((int)hWnd);
Win32Functions.GetClientRect((int)hWnd, ref windowRect);
Win32Functions.WINDOWINFO window = new Win32Functions.WINDOWINFO();
window.cbSize = System.Runtime.InteropServices.Marshal.SizeOf(window);
Win32Functions.GetWindowInfo((int)hWnd, ref window);
// create a device context we can copy to
IntPtr hdcDest = Win32Functions.CreateCompatibleDC(hdcSrc);
// create a bitmap we can copy it to,
// using GetDeviceCaps to get the width/height
IntPtr hBitmap = Win32Functions.CreateCompatibleBitmap(hdcSrc, pwidth, pheight);
//// select the bitmap object
IntPtr hOld = Win32Functions.SelectObject(hdcDest, hBitmap);
// bitblt over
Win32Functions.BitBlt(hdcDest, 0,
0, pwidth, pheight, hdcSrc, window.rcClient.left - window.rcWindow.left,
window.rcClient.top - window.rcWindow.top,
(uint)(Win32Defines.SRCCOPY));
Win32Functions.CURSORINFO ci = new Win32Functions.CURSORINFO();
ci.cbSize = System.Runtime.InteropServices.Marshal.SizeOf(ci);
Win32Functions.GetCursorInfo(ref ci);
Win32Functions.PICONINFO pi = new Win32Functions.PICONINFO();
Win32Functions.GetIconInfo(ci.hCursor, ref pi);
Win32Functions.DrawIconEx(hdcDest, ci.point.x - window.rcClient.left - pi.xHotSpot,
ci.point.y - window.rcClient.top - pi.yHotSpot, (int)ci.hCursor, 0, 0, 0, 0, 3);
Win32Functions.SelectObject(hdcDest, hOld);
Win32Functions.ReleaseDC(hWnd, hdcDest);
Win32Functions.DeleteDC(hdcDest);
Win32Functions.ReleaseDC(hWnd, hdcSrc);
byte[] b = new byte[(pwidth * pheight * 4)];
Win32Functions.GetBitmapBits(hBitmap, (pwidth * pheight * 4), b);
Win32Functions.DeleteObject(hBitmap);
return(b);
}