>
>however OpenThemeData always returns a handle of 0.
>
>Tried several things with bits I found in the net.
>
>current code is something like this:
>

>#define handle long
>
>declare handle OpenThemeData in uxtheme.dll long hWnd, string pszClasslist

Is that what you are using? "declare handle"?

Try:

DECLARE INTEGER OpenThemeData IN uxtheme.dll;
	INTEGER hWnd,;
	INTEGER pszClassList

From the Help File:

DECLARE [cFunctionType]....

cFunctionType:

SHORT
INTEGER
SINGLE
DOUBLE
LONG
STRING
OBJECT

I dont see "HANDLE" listed. Could that be the problem?

[EDIT]

No, I see you did #define handle long

Carlos