> The problem is that I put a Call Back function on one of the 
> buttons.  The function is supposed to just do a simple prinf 
> command.  When I pushed the button nothing came up on the 
> output window of Visual Studio.
> 
> So to recap.  The program compiles fine and the GUI is 
> created, but the function on the button isn't working.
> 
> Can anyone help? thank you.


I think this may be due to a basic problem with the way that win32
systems generally handle stdio. The MS tools build GUI apps in such a
way that the stdio is detached, so printf output is lost.

You can build your app to specifically have an output console (I think
that's /m:console in the VC compiler command options, but I never use
the MS tools so am probably wrong) and then you should see your printf
output there.

Failing that, do what I do: use mingw in an Msys shell rather than the
MS tools, then stdio works "properly" and all is well!

Cheers,
-- 
Ian



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