ho due dubbi...

codice:
Public Declare Function SetWindowRgn Lib "user32" Alias "SetWindowRgn" (ByVal hWnd As Long, ByVal hRgn As Long, ByVal bRedraw As Boolean) As Long
lo metto in un modulo?

codice:
Public Declare Function CreateEllipticRgn Lib "gdi32" Alias "CreateEllipticRgn" (ByVal X1 As Long, ByVal Y1 As Long,ByVal _
X2 As Long, ByVal Y2 As Long) As Long
Perchè VB mi cancella automaticamnte Alias "CreateEllipticRgn" ?