cocreateinsatnce返回系统找不到COM中指定的文件

Question

 CoInitialize(NULL);
GCalender::IGCalenderSync* pGCalender;
HRESULT hr = CoCreateInstance(__uuidof(GCalender::GCalenderSyncHelper),NULL, 
   CLSCTX_INPROC_SERVER,__uuidof(GCalender::IGCalenderSync),(void**)&pGCalender);

GCalender::GenericEvent HUGEP *pDeletedEvents;  
GCalender::GenericEvent HUGEP *pUpdatedEvents;  
GCalender::GenericEvent HUGEP *pNewEvents;  

SAFEARRAY* deletedEvents, *updatedEvents, *newEvents;
pGCalender->GetAllEvents(&deletedEvents, &updatedEvents, &newEvents);

hr = SafeArrayAccessData(newEvents, (void HUGEP* FAR*)&pNewEvents);
SafeArrayUnaccessData(newEvents);
hr = SafeArrayAccessData(deletedEvents, (void HUGEP* FAR*)&pDeletedEvents);
SafeArrayUnaccessData(deletedEvents);
hr = SafeArrayAccessData(updatedEvents, (void HUGEP* FAR*)&pUpdatedEvents);
SafeArrayUnaccessData(updatedEvents);
CoUninitialize();

在上面的代码中，HR值是0X8007002 (系统找不到指定的文件)如何解决这个问题。

Answer 1

如果您传递给CoCreateInstance()的类id的COM服务器已注册，但由于某种原因找不到.dll文件或其依赖项，就会发生这种情况。你最好的选择是Process Monitor utility -它会让你看到到底是什么文件丢失了。