Article View: comp.graphics.api.opengl
Article #20Getting NULL insted of information from glGetString(GLenum)
From: Dr. Antoni Kajetan Wisor
Date: Wed, 20 Oct 1999 00:00
Date: Wed, 20 Oct 1999 00:00
36 lines
1725 bytes
1725 bytes
Hi folks!
I have a small problem with OpenGL. Because I am not very deep in this topic, I
do not know what to do further. If any one can help me, please post it. Here is
an excerpt of my problem, which should run without any problem after
compilation:
#include <stdio.h> //Standard C I/O functions
#include <windows.h> //For Win32-API Applications
#include <gl/gl.h> //OpenGL
/* Declaration of prototypes */
LONG __cdecl main();
/* Mainprog */
LONG __cdecl main()
{
char* vendor = (char*)glGetString((GLenum)GL_VENDOR);
char* renderer = (char*)glGetString((GLenum)GL_RENDERER);
char* version = (char*)glGetString((GLenum)GL_VERSION);
char* extensions = (char*)glGetString((GLenum)GL_EXTENSIONS);
glFlush();
printf("Vendor: %s\n", vendor);
printf("Renderer: %s\n", renderer);
printf("Version: %s\n", version);
printf("Extensions: %s", extensions);
return (LONG)0;
}
Thanks!
Jakob Wisor
Technical Details
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