POOM for homescreen plugins?

[Guest yves]

Hi

I tried to use the helloplug sample and access POOM from it. but I must have forgotten something. I wrote some poom code in a wtl project where it worked out fine, but in the plugin sample it fails

helloplug.obj : error LNK2019: unresolved external symbol CoCreateInstance referenced in function "unsigned short * __cdecl GetADate(void)" (?GetADate@@YAPAGXZ)

helloplug.obj : error LNK2019: unresolved external symbol CoInitializeEx referenced in function "unsigned short * __cdecl GetADate(void)" (?GetADate@@YAPAGXZ)

what's the problem with it?

I included

#include

#include

#include

and defined

#define INITGUID

have I forgotten anything in the project settings?

thank you for your help