Go4Expert - CoCreateInstance in DLL

i have created one dll to connect to the com object of one application and call a method of the com. Its working fine. but with one issue. Every time dll is access it keeps creating new instance, so i to avoid this i created global variables, but seems its now working.

connectApi - this function to be called only once to create com instance
sendOrder - this function will be called repeatably as need be which shud use the com object pointer created by the connectApi function.

here is the code:

Code:

IPlusapi *pNestApp;

HRESULT hr;





BOOL APIENTRY DllMain( HANDLE hModule, 

                       DWORD  ul_reason_for_call, 

                       LPVOID lpReserved

                     )

{



    return TRUE;

}



 int __stdcall connectApi(char* apiname)

{

    CoInitialize(NULL);



    const CLSID clsid = {0x91741D4F, 0x948B, 0x46A0, {0xA2,0xCC,0x0B,0x92,0x5c,0x4f,0x5e,0x17}};

    hr = CoCreateInstance(clsid,NULL, CLSCTX_LOCAL_SERVER, IID_IPlusapi, (void **)&pNestApp);



    if(FAILED(hr)) {

        MessageBox(NULL,"Nest Plus API Not registered properly","ERROR",NULL);

        return(-1);

    }

    else {

         pNestApp->SetObjectName(apiname);

         

         return(1);

    }

     

}







void __stdcall sendOrder(char* type,char* refno,char*exch,char* sym,char* valid, char* ordertype,

                                     long qty,double price,double triggerprice,long disqty,char* prodtype,char* clientid)

{

    

    if(SUCCEEDED(hr))

    {

        pNestApp->PlaceOrder(type,refno,exch,sym,valid,ordertype,qty,price,triggerprice,disqty,prodtype,clientid);

      

    }

}