Re: Re: IActiveDesktop::SetWallpaper from Perl?

[blm]

IMHO you are getting that error message because the first parameter of

STDAPI CoCreateInstance(
    REFCLSID rclsid,
    LPUNKNOWN pUnkOuter,
    DWORD dwClsContext,
    REFIID riid,
    LPVOID * ppv
);

is a struct not a string

typedef struct _GUID {          // size is 16
    DWORD Data1;
    WORD   Data2;
    WORD   Data3;
    BYTE  Data4[8];
} GUID;

defined on my machine in WINNT.H

--blm--

[Mr. Muskrat]

Thanks. I don't play with the system calls too often. I was using the code that bbfu provided. I didn't know if it was correct or not. Perhaps I'll have time to play with this more later in the week. It's becoming quite fun.