public Bitmap CaptureWindow(IntPtr hwnd)
{
IntPtr desktopHwnd = UnsafeNativeMethods.GetDesktopWindow();
IntPtr desktopDC = UnsafeNativeMethods.GetWindowDC(desktopHwnd);
IntPtr windowDC = UnsafeNativeMethods.GetWindowDC(hwnd);
Rectangle windowRegion = Interop.AdjustWindowRectangeToDesktopBounds(Interop.GetAbsoluteClientRect(hwnd));
IntPtr memoryDC = UnsafeNativeMethods.CreateCompatibleDC(desktopDC);
IntPtr hBitmap = UnsafeNativeMethods.CreateCompatibleBitmap(desktopDC, windowRegion.Width,
windowRegion.Height);
IntPtr holdBitmap = UnsafeNativeMethods.SelectObject(memoryDC, hBitmap);
Bitmap b = null;
bool success = UnsafeNativeMethods.BitBlt
(memoryDC,
0,
0,
windowRegion.Width,
windowRegion.Height,
desktopDC,
windowRegion.Left,
windowRegion.Top,
UnsafeNativeMethods.SRCCOPY |
UnsafeNativeMethods.CAPTUREBLT);
if (success)
{
b = Image.FromHbitmap(hBitmap);
}
UnsafeNativeMethods.SelectObject(memoryDC, holdBitmap);
UnsafeNativeMethods.DeleteObject(hBitmap);
UnsafeNativeMethods.DeleteDC(memoryDC);
UnsafeNativeMethods.ReleaseDC(desktopHwnd, desktopDC);
UnsafeNativeMethods.ReleaseDC(hwnd, windowDC);
return(b);
}
/// <summary>
/// Capture the entire client area of a window
/// </summary>
/// <param name="hWnd"></param>
/// <returns></returns>
public Bitmap CaptureWindow(IntPtr hWnd)
{
return(CaptureRegionDirect3D(hWnd,
Interop.AdjustWindowRectangeToDesktopBounds(Interop.GetAbsoluteClientRect(hWnd))));
}
