Question

我创建了一个ActiveX控件，可以在除客户端位置的两台PC之外的所有PC上运行。我已经将问题缩小到CoCreateInstance（）失败，并且失败并出现未知错误。

什么可能导致这个问题？

请参阅以下代码：

try
{   
 CComPtr<IDispatch>  lpTDispatch;
//Following line generates an exception
 HRESULT hr = lpTDispatch.CoCreateInstance(_bstr_t("XBrowseInvokerBean.Bean.1"));

//Following line do not get executed.
DWORD lasterror = GetLastError();        
logFile->Write(CString("GetLastError : %u"), lasterror);
logFile->Write(CString("HRESULT Value: %X"), hr);       
}

catch(CException *e)
{     
//Exception does not get caught in this catch

  LPSTR strError ="";
  e->GetErrorMessage(strError,MAX_PATH);        
  logFile->Write("Exception:"+CString(strError));   
  CoUninitialize();
}

catch (_com_error e)
{    
 //Exception does not get caught in this catch

CString err2 = _com_error(HRESULT_FROM_WIN32(GetLastError())).ErrorMessage();
logFile->Write("COM ERROR2:"+CString(err2));
CoUninitialize();
}

catch(...)
{    
 //Exception get caught in this catch, Value returned is 0.

 logFile->Write("Unknown exception occurred:%X",  
                HRESULT_FROM_WIN32(GetLastError()));        
 CoUninitialize();
}

Answer 1

几乎可以肯定是由于缺少依赖性。检查注册表以查看是否安装了XBrowseInvokerBean.Bean及其所依赖的任何内容。

CoCreateInstance失败，出现未知错误

1 个答案: