public static Image CaptureRectangleNative(IntPtr handle, Rectangle rect, bool captureCursor = false)
{
if (rect.Width == 0 || rect.Height == 0)
{
return null;
}
IntPtr hdcSrc = NativeMethods.GetWindowDC(handle);
IntPtr hdcDest = NativeMethods.CreateCompatibleDC(hdcSrc);
IntPtr hBitmap = NativeMethods.CreateCompatibleBitmap(hdcSrc, rect.Width, rect.Height);
IntPtr hOld = NativeMethods.SelectObject(hdcDest, hBitmap);
NativeMethods.BitBlt(hdcDest, 0, 0, rect.Width, rect.Height, hdcSrc, rect.X, rect.Y, CopyPixelOperation.SourceCopy | CopyPixelOperation.CaptureBlt);
if (captureCursor)
{
Point cursorOffset = CaptureHelpers.ScreenToClient(rect.Location);
try
{
using (CursorData cursorData = new CursorData())
{
cursorData.DrawCursorToHandle(hdcDest, cursorOffset);
}
}
catch (Exception e)
{
DebugHelper.WriteException(e, "Cursor capture failed.");
}
}
NativeMethods.SelectObject(hdcDest, hOld);
NativeMethods.DeleteDC(hdcDest);
NativeMethods.ReleaseDC(handle, hdcSrc);
Image img = Image.FromHbitmap(hBitmap);
NativeMethods.DeleteObject(hBitmap);
return img;
}
