Re: [Dev-C++] Subclass inside a class problem

[Michael P. <mdp...@ya...>]

You are not wrong Elias. All Callback functions must
be static. The windows calling procedure does not know
about the implicit 'this' pointer that is passed to
every non-static class member function.  With out the
'this' pointer, the appropriate instance of the class
can not be called.

Static functions do not have a this pointer and are
unaware of a specific class instance.  You must always
find a way to pass or store a pointer to your class if
you need it when a callback is fired. 




--- Elias Pschernig <eli...@ao...> wrote:
> ...
> >
> > class akorichedit{
> > private:
> > //...
> > WNDPROC wpOrigRichEditProc;
> > LRESULT CALLBACK RichEditSubclassProc(HWND hwnd,
> UINT
> > uMsg, WPARAM wParam, LPARAM lParam);
> > //...
> > public:
> > void create();
> > //...
> > };
> >
> ...
> 
> I think callback functions have to be static. (I
> remember reading
> something about this in one of the microsoft
> examples - but maybe i'm
> wrong)
> 
> Elias Pschernig
> 
> 
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>
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