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));
}