Filippo has written a library with transparent Labels.
It works with a PPC program written with Visual Studio using the library, but it doesn't work within a B4PPC program using the same library. He was asking on the german forum why.
As I dont know why, I suggested him to submit the problem to you. He aked me to formulate the question in english because he feels much better in italian or in german.
I haven't rigorously analysed this but from looking inside the fgControls library with Reflector he seems to be trying to draw on the forms background directly. Unfortunately a Basic4ppc Form also draws its backlayer and then its forelayer on the form background so I suspect that it is overwriting his drawing. Tell him to look in CEnhancedForm.cs in the Tzor folder to see what a Basic4ppc Form does on paint.