Problem with LayeredWindow on Windows XP

[Ky Nam]

Hello On Windows XP ( maybe 2000/2003 also ) , if a layered window setup with SetLayeredWindowAttributes , when its size changes , the GetLayeredWindowAttributes doesn't work , the function returns false What should i do to get window's alpha in that case ? Thanks Declare Function GetLayeredWindowAttributes Lib "user32.dll" (ByVal hwnd As IntPtr, ByRef crKey As Integer, ByRef bAlpha As Byte, ByRef dwFlags As LWA) As Boolean Dim a As Byte Dim Flags As LWA If GetLayeredWindowAttributes(hWnd, 0, a, Flags) Then If Flags And LWA.Alpha Then Return a End If