CreateComponentCategory

Question

你可能在看ATL开发指南，这个函数不是VC的库函数，而是一个自己编写的函数。
一下是它的实现代码:
HRESULT CreateComponentCategory(CATID catid, WCHAR* catDescription)
{
   ICatRegister* pcr = 0;
   HRESULT hr;
   hr = CoCreateInstance( CLSID_StdComponentCategoriesMgr,
                          NULL,
                          CLSCTX_INPROC_SERVER,
                          IID_ICatRegister,
                          (void**)&pcr );
   if (FAILED(hr))
      return hr;   CATEGORYINFO catinfo;
   catinfo.catid = catid;
   catinfo.lcid = 0x0409;
   int len = wcslen( catDescription );
   wcsncpy( catinfo.szDescription, catDescription, wcslen( catDescription ));
   catinfo.szDescription[len] = '\0';   hr = pcr->RegisterCategories( 1, &catinfo );
   pcr->Release();   return hr;
}

Answer 1

谢谢高手，我正在看“Atl开发指南”
还有一个函数RegisterCLSIDInCategory也是如此吗？

Answer 2

HRESULT RegisterCLSIDInCategory(REFCLSID clsid, CATID catid)
{
   // Register your component categories information.
   ICatRegister* pcr = 0;
   HRESULT hr;
   hr = CoCreateInstance( CLSID_StdComponentCategoriesMgr,
                          NULL,
                          CLSCTX_INPROC_SERVER,
                          IID_ICatRegister,
                          (void**)&pcr );
   if (SUCCEEDED(hr))
   {
      CATID rgcatid[1] ;
      rgcatid[0] = catid;
      hr = pcr->RegisterClassImplCategories( clsid, 1, rgcatid );      pcr->Release();
   }   return hr;
}