Beginning OpenGL Programming

OpenGL OpenGL: Basic Coding
1

I have this code:

#include <GL/glut.h>

void main(int argcp, char **argv)
{

glutInit(&argcp,argv);
glutInitWindowSize(640,480);
glutInitWindowPosition(100,100);
glutInitDisplayMode(GLUT_RGBA);
glutMainLoop();

}

It returns:

main.obj : error LNK2001: unresolved external symbol ___glutInitWithExit@12
Debug/main.exe : fatal error LNK1120: 1 unresolved externals

Why is that?

2

When you post compiler error’s remember to state what compiler you are using and what version.

Try adding #include<windows.h> before glut.h.

Originally posted by Spyros:
[b]I have this code:

#include <GL/glut.h>

void main(int argcp, char **argv)
{

glutInit(&argcp,argv);
glutInitWindowSize(640,480);
glutInitWindowPosition(100,100);
glutInitDisplayMode(GLUT_RGBA);
glutMainLoop();
}

It returns:

main.obj : error LNK2001: unresolved external symbol ___glutInitWithExit@12
Debug/main.exe : fatal error LNK1120: 1 unresolved externals

Why is that?[/b]

3

#pragma comment (lib, “glut.lib”)

4

Actually, that looks like the infamous glut exit hack needed for some versions of glut on some compilers. Before #include <GL/glut.h> add

#define GLUT_DISABLE_ATEXIT_HACK