"Day, Michael A AMRDEC/UAH" wrote: > test.cpp:72: error: invalid conversion from `void (*)()' to `void (*)()'
Win32 API functions generally use the stdcall calling convention, not the standard C one. Your tcbBegin is not defined this way and this could be what the compiler is trying to tell you, although the error certainly isn't very clear. If you look at glu.h: GLAPI void APIENTRY gluTessCallback (GLUtesselator* tess, GLenum which, _GLUfuncptr CallBackFunc); where _GLUfuncptr is defined as: typedef void (APIENTRY *_GLUfuncptr)(); where APIENTRY expands to "__attribute__ ((__stdcall__))". So you'll need to declare your callback with that attribute or else it will not work. Brian -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/