Subclassing main window?

Hey everyone :). I am working on a com extension and I have it so the class posts messages back to the owner. This is great and I have it all working fine but in order to be able to retrieve the Rundata structure I had to subclass the main window O_o.

Something like this:

Code:

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        rdPtr->hwnd[0]=rdPtr->rHo.hoAdRunHeader->rhHEditWin;
        rdPtr->rWindowNumber = MAX_WINDOWS;
        rdPtr->rHo.hoOffsetToWindows = (int)((LPBYTE)&rdPtr->rWindowNumber - (LPBYTE)rdPtr);
        callRunTimeFunction(rdPtr, RFUNCTION_SUBCLASSWINDOW, 0, 0);

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I want to know why we have to do this or if there is an easier way.

Thanks :).

It's not recommended at all, that could generate conflicts and maybe infinite loops, and the window won't be unsubclassed.

You should attach rdPtr as a property to the window with SetProp and retrieve it with GetProp (basically that's a part of what the subclass function of the runtime does).

Note that there will be a problem if there could be several instances of your object in the frame. In this case you have to attach a list of rdPtr to the window.

Ah, thanks for the information :). Makes sense now.