🚀 go-pugleaf

Ed Mulroy [TeamB] wrote:
> I wrote:
> 
> 
>>>You specified a member function of a structure to 
>>>Windows as a callback function.  Windows is not 
>>>party to the internal configuration of your program
>>>and has no facilities to call a non static member 
>>>function in the context of whatever instance of that 
>>>structure you intended to be used.
> 
> 
> You replied:
> 
> 
>>If you have got Borland C++ 4.02 or greater and Look 
>>for windows examples; it exactly contradicts you 
>>statement.
> 
> 
> That is not true.  
> 
> You described a problem and asked what is wrong.  I told 
> you what was wrong. 
> 
> Go to your books on C++.  Investigate what they say about
> function pointers to non-static member functions and how
> they are different from function pointers to normal, 
> non-member functions. 
> 
> You are trying to specify a non-static member function 
> as the window procedure address in the lpfnWndProc 
> element of a WNDPROC structure.  The line generates an 
> error because what is assigned to the element is not of 
> the same type.  The address of a non-static member 
> function involves not only the address of the function 
> code but also that of the instance of the structure or
> class of which it is a member.  The lpfnWndProc variable
> is not a compatible type to the address of a non-static
> member functon of a class or structure.
> 
> .  Ed 
> 
> 
>>FireHead <satishA82@linuxmail.org> wrote:
> 
> 

Thanks for the explaination.
It was very useful.