Created attachment 142097 [details]
Updated gtkcellrendereraccel.c

While attempting to compile the gtk+ package on Windows XP using Visual C++
2008 Express Edition, the compilation failed on gtk/gtkcellrendereraccel.c
because
gtk_grab_remove (circa line 468) and gtk_grab_add (circa line 602) were
undefined.

Upon further investiagtion, using MinGW to compile the file will succeed, but
there are "implicit definition of function ..." on the above-mentioned
functions that are being thrown, so I believe that does not seem to be a good
sign. Hence, as the functions are used in other parts of gtk+ and they seem to
be OK, it turns out that gtkmain.h (which contains the concerned definitions)
was not being included in gtk/gtkcellrendereraccel.c when the code is being
compiled.

Hence, my proposal was to add #include "gtkmain.h" on line 30 of the program
(at the bottom of the #include's, please see attachment), but I do not know
whether that would be the best solution to propose.  The code seemed to compile
fine and my GTK+ programs that depend on the resulting DLL was also running
fine.

Thank you.