Thread: incompatible type for argument 1 of `CoCreateInstance

hey guys, i've been googling for over an hour and haven't found anything that helped, so i thought i'd post here to see if anyone can help me solve my problem, here is my source

Code:

#include <windows.h>
#include "msgrua.h"
#include "msgruaid.h"

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)  
{
   IMessenger *pIMessenger;
   CoCreateInstance(CLSID_Messenger, NULL, CLSCTX_ALL, IID_IMessenger, (void **)&pIMessenger);
   return 0;
}

and when i try to compile i get the following errors:

Code:

incompatible type for argument 1 of `CoCreateInstance' 
incompatible type for argument 4 of `CoCreateInstance'

i know the error is telling me that the arguments 1 and 4 inside CoCreateInstance are not compatible, but i have no idea why, im using dev-cpp if it helps, thanks in advance.

Originally Posted by itsme86

Well, it would really help if you actually showed us how the variables you're using for arguments 1 and 4 were declared. The variable names alone is absolutely no use to us at all whatsoever.

Other than that, RTFM.

they are defined in the header file "msgrua.h"

Code:

EXTERN_C const CLSID CLSID_Messenger;
EXTERN_C const IID IID_IMessenger;