public static Rectangle GetWindowRect(this IntPtr hWnd)
{
var rect = new User32Api.RectApi();
User32Api.GetWindowRect(hWnd, ref rect);
return(rect.ToRectangle());
}
public static Bitmap Capture(this IntPtr hWnd)
{
var hscrdc = User32Api.GetWindowDC(hWnd);
var windowRect = new User32Api.RectApi();
User32Api.GetWindowRect(hWnd, ref windowRect);
var width = windowRect.right - windowRect.left;
var height = windowRect.bottom - windowRect.top;
var hbitmap = Gdi32Api.CreateCompatibleBitmap(hscrdc, width, height);
var hmemdc = Gdi32Api.CreateCompatibleDC(hscrdc);
Gdi32Api.SelectObject(hmemdc, hbitmap);
User32Api.PrintWindow(hWnd, hmemdc, 0);
var bmp = Image.FromHbitmap(hbitmap);
Gdi32Api.DeleteDC(hscrdc); //删除用过的对象
Gdi32Api.DeleteDC(hmemdc); //删除用过的对象
GC.Collect();
return(bmp);
}
