What does InvokeHelper function mean

ooppoo

I am doing the course design of that communication. I downloaded some vc source code from the Internet and found a lot of calls to InvokeHelper function. After checking a lot of information, I still can't figure out what those parameters are.
For example
InvokeHelper (0x1c, DISPATCH_PROPERTYGET, VT_BOOL, (void *)&result, NULL);
           InvokeHelper (0x1d, DISPATCH_PROPERTYPUT, VT_EMPTY, NULL, parms, nNewValue);
        and many more
I don't think the MSDN is clear
So which friend knows what to say
Wait thank you !!!!!!!!!!!!!!!!!!!!! 1

moon_archer

This code is generated by ide itself, probably a function method of calling the component.

graydeath

It feels like the stuff in the COM component

luluzhao

When you call related methods in the ActiveX control, you need to import this control into the program, and a pseudo-calling class about this control call will be generated in the project. Each method called in the cpp is The dwDispID value is called by InvokeHelper to locate the address of the method! Therefore, the InvokeHelper call can be understood as a means of locating related methods in the activex control!

ll_azrael3

invokehelper: A wrapper method used to invoke the IDispatch interface method of OLE.

amagicaler

Thanks,luluzhao,widmen