alpha key - transparency

[SirThornberry]

your "SetTransparentForm" works only for top-level windows. If a window has a Parent this will not work.
If you need Alphatransparenz you have to write your own components.

you can get the image of your parent componenty with:

Delphi-Quellcode:

Parent.Perform(WM_ERASEBKGND, DC, 0);
Parent.Perform(WM_PAINT, DC, 0);

then you can use this picture in your own component to blend it with your components pic.

[Edit]
I found a solution for controls derived from (oder was heißt abgeleitet) TCustomControl like TPanel
[/Edit]