Define a COM pointer as a private member in C++?

Question

I am wondering how I can define a COM pointer as a private member. Here is what I want to do:

in h file:

MCLControlPtr _mcSwitch;  //MCLControPtr is "_COM_SMARTPTR_TYPEDEF(_MCLControlClass, __uuidof(_MCLControlClass));"

in cpp constructor file

ThorDetectorSwitch::ThorDetectorSwitch() 
{
     _mcSwitch = new MCLControlPtr _mcSwitch(__uuidof(MCLControlClass));

    _deviceDetected = FALSE;
}

but of course it does not allow me to build because the syntax is not right.

I am wondering how I can do what I want to do with the right syntax? Basically initilize a COM smart pointer in constructor? I also do NOT want to use initilization list as well. Thanks.

UPDATE: Anyone has any idea? This is really bothering me for days.

Answer 1

You can do something like this:

In your head file

COMInterface *_comInterface;

In your cpp file

COMInterfacePtr comSmartPtr;
hr = ::CoCreateInstance(see reference for stuff inside here);
_comInterface = comSmartPtr;