private static Bitmap CaptureScreenRegion(Rectangle crop)
{
Rectangle totalSize = Rectangle.Empty;
foreach (Screen s in Screen.AllScreens)
{
totalSize = Rectangle.Union(totalSize, s.Bounds);
}
IntPtr hSrc = WindowsApi.CreateDC("DISPLAY", null, null, 0);
IntPtr hDest = WindowsApi.CreateCompatibleDC(hSrc);
IntPtr hBmp = WindowsApi.CreateCompatibleBitmap(hSrc,
crop.Right -
crop.Left,
crop.Bottom -
crop.Top);
IntPtr hOldBmp = WindowsApi.SelectObject(hDest, hBmp);
WindowsApi.BitBlt(hDest, 0, 0, crop.Right - crop.Left,
crop.Bottom - crop.Top, hSrc, crop.Left, crop.Top,
CopyPixelOperation.SourceCopy |
CopyPixelOperation.CaptureBlt);
Bitmap bmp = Image.FromHbitmap(hBmp);
WindowsApi.SelectObject(hDest, hOldBmp);
WindowsApi.DeleteObject(hBmp);
WindowsApi.DeleteDC(hDest);
WindowsApi.DeleteDC(hSrc);
return(bmp.Clone(new Rectangle(0, 0, bmp.Width, bmp.Height),
PixelFormat.Format24bppRgb));
}
private void OnPaint(object sender, PaintEventArgs e)
{
if (_dwmComposited)
{
var rc = new Rectangle(0, ClientSize.Height - 35,
ClientSize.Width, 35);
IntPtr destdc = e.Graphics.GetHdc();
IntPtr memdc = WindowsApi.CreateCompatibleDC(destdc);
IntPtr bitmapOld = IntPtr.Zero;
var dib = new BitmapInfo {
biHeight = -(rc.Bottom - rc.Top),
biWidth = rc.Right - rc.Left,
biPlanes = 1,
biSize = Marshal.SizeOf(typeof(BitmapInfo)),
biBitCount = 32,
biCompression = 0
};
if (WindowsApi.SaveDC(memdc) != 0)
{
IntPtr tmp;
IntPtr bitmap = WindowsApi.CreateDIBSection(memdc, ref dib,
0, out tmp,
IntPtr.Zero, 0);
if (!(bitmap == IntPtr.Zero))
{
bitmapOld = WindowsApi.SelectObject(memdc, bitmap);
WindowsApi.BitBlt(destdc, rc.Left, rc.Top,
rc.Right - rc.Left, rc.Bottom - rc.Top,
memdc, 0, 0,
CopyPixelOperation.SourceCopy);
}
WindowsApi.SelectObject(memdc, bitmapOld);
WindowsApi.DeleteObject(bitmap);
WindowsApi.DeleteDC(memdc);
}
e.Graphics.ReleaseHdc(destdc);
}
e.Graphics.DrawImage(_ssButtonImage,
new Rectangle(ssButton.Location, ssButton.Size));
}
