I have one here that I cannot find anything on in my searching.

I am implementing a screen capture functionality into my Visual Basic
.NET application.

The code I am using calls the bitblt function in gdi32.dll to achieve
its magic as follows:

   Public Function CreateScreenshot() As Bitmap

       Dim Rect As Rectangle = Screen.PrimaryScreen.Bounds
       Dim gDest As Graphics
       Dim hdcDest, hdcSrc As IntPtr

       CreateScreenshot = New Bitmap(Rect.Right, Rect.Bottom)
       gDest = gDest.FromImage(CreateScreenshot)

       hdcSrc = GetDC(IntPtr.Zero)
       hdcDest = gDest.GetHdc
       BitBlt(hdcDest, 0, 0, _
          Rect.Right, Rect.Bottom, hdcSrc, 0, 0, SRCCOPY)
       gDest.ReleaseHdc(hdcDest)
       ReleaseDC(IntPtr.Zero, hdcSrc)

   End Function
   

This code works marvelously HOWEVER.....

This screen capture needs to capture my form (which is opaque) ontop
another form.

I have found that when the opacity for the topmost form is set less
than 100 % it does not show up in my capture.

The interesting thing is that a Ctrl-Alt-Print Screen yields the
opaque form in the resulting capture perfectly.

I have some ideas as to why this might be occuring ( gdi functions not
supporting nifty rendering features like opacity being at the top)

Nothing I have come up with at this point (and my skill levels) lead
me to any obvious solutions

I would rather not use Sendkeys and the clipboard as I feel that this
is shoddy at best.

Anybody have any ideas?

Thanks In Advance

Eddie