I do have access to the background control's graphics object, but, as
i mentioned, don't know how to "extract" the controul's bitmap into
another bitmap without using CopyFromScreen().

Here is a simplified representation of my code:

   Rectangle rc = new
Rectangle(this.PointToScreen(foregroundControl.Location),
       foregroundControl.Size);
   using (Bitmap bitmap = new Bitmap(rc.Width, rc.Height,
       PixelFormat.Format32bppArgb))
   using (Graphics g = Graphics.FromImage(bitmap))
   {
       g.CopyFromScreen(rc.Left, rc.Top, 0, 0, rc.Size);
       foregroundControl.BackBitmap = bitmap;
   }
   foregroundControl.Invalidate(true);

Again, to re-iterate, CopyFromScreen() includes overlapping windows
and therefore messes up the foregroundControl's appearance. I need to
figure out how to copy the backgroundControl's bitmap without using
CopyFromScreen.

Thanks