C++中COM组件初始化方法实例分析

CoInitialize(NULL);//初始化COM套件
CoUninitialize();//释放COM套件

static bool isCoInitialize = false; //是否是自己进行的初始化
int WINAPI DllEntryPoint(HINSTANCE hinst, unsigned long reason, void* lpReserved)
{
  if(reason==DLL_PROCESS_ATTACH)
  {
    if(ConInitialize(NULL) == S_OK) isCoInitialize = true;
  }
  if(reason==DLL_PROCESS_DETACH)
  {
    if(isCoInitialize) CoUninitialize();
    //是自己初始化的才释放，否则由其他初始化的地方自行释放，
    //防止错误的释放导致别的调用者失败
  }
  return 1;
}