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

[Brian B. <bcb...@ya...>]

Hi,
Thank you all for this information, it helped greatly.

Respectfully,
Brian


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
> 
> 
> _______________________________________________
> Dev-cpp-users mailing list
> Dev...@li...
>
http://lists.sourceforge.net/lists/listinfo/dev-cpp-users


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