public static Bitmap CaptureRegion(Rect region)
{
Bitmap result;
// ReSharper disable once IdentifierTypo
var desktophWnd = NativeScreenShotMethods.GetDesktopWindow();
var desktopDc = NativeScreenShotMethods.GetWindowDC(desktophWnd);
var memoryDc = NativeScreenShotMethods.CreateCompatibleDC(desktopDc);
var bitmap =
NativeScreenShotMethods.CreateCompatibleBitmap(desktopDc, (int)region.Width, (int)region.Height);
var oldBitmap = NativeScreenShotMethods.SelectObject(memoryDc, bitmap);
var success = NativeScreenShotMethods.BitBlt(memoryDc, 0, 0, (int)region.Width, (int)region.Height,
desktopDc, (int)region.Left, (int)region.Top,
NativeScreenShotMethods.RasterOperations.SRCCOPY | NativeScreenShotMethods.RasterOperations.CAPTUREBLT);
try
{
if (!success)
{
throw new Win32Exception();
}
result = Image.FromHbitmap(bitmap);
}
finally
{
NativeScreenShotMethods.SelectObject(memoryDc, oldBitmap);
NativeScreenShotMethods.DeleteObject(bitmap);
NativeScreenShotMethods.DeleteDC(memoryDc);
NativeScreenShotMethods.ReleaseDC(desktophWnd, desktopDc);
}
return(result);
}
//https://stackoverflow.com/questions/1118496/using-image-control-in-wpf-to-display-system-drawing-bitmap/1118557#1118557
public static BitmapSource BitmapSourceFromSystemDrawingBitmap(Bitmap source)
{
var ip = source.GetHbitmap();
BitmapSource bs;
try
{
bs = Imaging.CreateBitmapSourceFromHBitmap(ip, IntPtr.Zero, Int32Rect.Empty,
BitmapSizeOptions.FromEmptyOptions());
}
finally
{
NativeScreenShotMethods.DeleteObject(ip);
}
return(bs);
}
public static Bitmap CaptureWindow(IntPtr hWnd)
{
NativeScreenShotMethods.RECT region;
if (Environment.OSVersion.Version.Major < 6)
{
NativeScreenShotMethods.GetWindowRect(hWnd, out region);
}
else
{
if (NativeScreenShotMethods.DwmGetWindowAttribute(hWnd,
NativeScreenShotMethods.DWMWA_EXTENDED_FRAME_BOUNDS, out region,
Marshal.SizeOf(typeof(NativeScreenShotMethods.RECT))) !=
0)
{
NativeScreenShotMethods.GetWindowRect(hWnd, out region);
}
}
return(CaptureRegion(new Rect(new Point(region.left, region.top),
new Size(region.right - region.left, region.bottom - region.top))));
}
public static Bitmap CaptureActiveWindow()
{
return(CaptureWindow(NativeScreenShotMethods.GetForegroundWindow()));
}
