OpenGL-1.1.0 compile problem in cygwin-1.7

[André Bleau]

"Phan, Linh H"  wrote:
> 
> Hi Brian,
> 
> Can you show me how I can fix the cast?  I tried this:
> 
> #include 
> #include 
> void test (void)
> {
>   GLUtesselator *tobj = (GLUtesselator *)gluNewTess();
>   gluTessCallback(tobj, (GLenum)GLU_BEGIN, (void (*)())glBegin);
>   gluTessCallback(tobj, (GLenum)GLU_END, glEnd);
>   gluTessCallback(tobj, (GLenum)GLU_VERTEX, (void (*)())glVertex2fv);
> }
> 
> And that fixed it for glEnd, but I don't know how to fix the glBegin and glVertex2fv.  
> This is not my code; it's part of the SGI OpenInventor library.
> 
> Thank you,
> 
> Linh
> 
 
Hi Linh,
 
Did you try:
 
#include 
#include 
void test (void)
{
  GLUtesselator *tobj = gluNewTess();
  gluTessCallback(tobj, (GLenum)GLU_BEGIN, glBegin);
  gluTessCallback(tobj, (GLenum)GLU_END, glEnd);
  gluTessCallback(tobj, (GLenum)GLU_VERTEX, glVertex2fv);
}
 
Anyway, glu.h shows that the prototype for gluTessCallback is:

GLAPI void APIENTRY gluTessCallback (GLUtesselator* tess, GLenum which, _GLUfuncptr CallBackFunc);
 
so (_GLUfuncptr) is the obvious cast, no?
 

- André Bleau, Cygwin's volunteer OpenGL package maintainer.
 
Please direct any question or comment about the OpenGL package to cygwin at cygwin dot com
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