Problem while dragging a transparent RichTextBox

[iPrank]

Hi guys ! Here is latest update: (code attatched)

Modified this code for regioning.

This is how I've done it:

1. Place the transparent RTB on a picturebox container.
2. Make the full client area of the form transparent.
3. Get (BitBlt) screensout of the area that will go behind the picturebox.
4. Set the bitbelted picture on the picbox container. The RTB will draw the background correctly.
5. Again make the full client area (EXCEPT the area behind the picturebox) of the form transparent.

The problems are:
1. Flickers a lot.
2. Sometimes it draws the wallpaper correctly, but misses to draw a few icons.
3. Problem drawing the RTB scrollbars.
4. Must be activated atleast once.
5. Not sure how-to apply WM_WINDOWPOSCHANGING/WM_WINDOWPOSCHANGE. Without any check for RECT, it goes into infinite loop and crashes.