private void SetBackground(Image img)
{
try
{
Bitmap bitmap = (Bitmap)img;
if (bitmap.PixelFormat != PixelFormat.Format32bppArgb)
{
throw new ApplicationException();
}
IntPtr hObject = IntPtr.Zero;
IntPtr zero = IntPtr.Zero;
IntPtr hDC = Win32.GetDC(IntPtr.Zero);
IntPtr ptr2 = Win32.CreateCompatibleDC(hDC);
try
{
hObject = bitmap.GetHbitmap(Color.FromArgb(0));
zero = Win32.SelectObject(ptr2, hObject);
Win32.Size size2 = new Win32.Size(bitmap.Width, bitmap.Height);
Win32.Size psize = size2;
Win32.Point point3 = new Win32.Point(0, 0);
Win32.Point pprSrc = point3;
point3 = new Win32.Point(base.Left, base.Top);
Win32.Point pptDst = point3;
Win32.BLENDFUNCTION pblend = new Win32.BLENDFUNCTION();
pblend.BlendOp = 0;
pblend.BlendFlags = 0;
pblend.SourceConstantAlpha = 0xff;
pblend.AlphaFormat = 1;
Win32.UpdateLayeredWindow(this.Handle, hDC, ref pptDst, ref psize, ptr2, ref pprSrc, 0, ref pblend, 2);
}
catch (Exception exception1)
{
Exception exception = exception1;
throw exception;
}
finally
{
Win32.ReleaseDC(IntPtr.Zero, hDC);
if (hObject != IntPtr.Zero)
{
Win32.SelectObject(ptr2, zero);
Win32.DeleteObject(hObject);
}
Win32.DeleteDC(ptr2);
}
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
}
public Size(int cx, int cy)
{
this = new Win32.Size();
this.cx = cx;
this.cy = cy;
}
