InvokeHelper in Microsoft Visual C++ .NET

[IHateMyJob2004]

I am working on an inherited application. I am at my wits end as to what this is doing. Actually, I understand the parameters other than the very first one.

In particular, what is 0x4 doing? My understanding is that this maps to a method somewhere. How do I find out what it is mapping to?

unsigned long result;
InvokeHelper(0x4, DISPATCH_PROPERTYGET, VT_I4, (void*)&result, NULL);

 

[nickbits]

That is a DSPID which does map to a property. Normally they are #defines, hardcoding a value is bad practice. The meaning of that value should be in either:
The header file for that object
The documentation for that object
The IDL file for that object
The type library for that object (.dll/.tlb, view in oleview.exe)

 

[IHateMyJob2004]

nickbits,

Yup ... this code isn't good, but I've seen worse. No comments either!

Thanks, off to learn about the topics you mentioned.

 

[IHateMyJob2004]

Found hte IDs.

They are buried in another program!