VC调用COM组件

#include <iostream> #include "WK_ATL.h" #include "WK_ATL_i.c" using namespace std; int main() { CoInitialize(NULL); IMy_ATL* pATL = NULL; HRESULT hr = CoCreateInstance(CLSID_My_ATL,NULL,CLSCTX_INPROC_SERVER,IID_IMy_ATL,reinterpret_cast<void**>(&pATL)); if (FAILED(hr)) { MessageBoxA(NULL,"Could not create instance","",MB_OK); } else { long r; pATL->AddNumbers(10,10,&r); pATL->Release(); cout<<r<<endl; } CoUninitialize(); return 0; }