GetMem thanks for the reply..
This is not quite what I need, I've been looking at this alternative but without success so far...
But my idea is: the entire area around Panel1, as in my example, is 60% transparent (AlphaBlend) and only Panel1 and its objects are opaque...
Because I need to "see" Panel1 but at the same time "see" the content of the form in which it is contained... style as android messagebox where the background appears blurred...
This is what I need...
I'll use your example to see if I can create a region under the panel where windows ignore the transparency in it and its objects...