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# OpenGL glx.h question

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I am going to start an OpenGL course and I am trying to get a head start on it by compiling this simple program that was in the book:
#include <windows.h>
#include <gl/Gl.h>
#include<gl/glut.h>

void myInit(void)
{

glClearColor(1.0,1.0,1.0,0.0);
glColor3f(0.0f,0.0f,0.0f);
glPointSize(4.0);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluOrtho2d(0.0,640.0,0.0,480.0);

}

void myDisplay(void)
{
glClear(GL_COLOR_BUFFER_BIT);
glBegin(GL_POINTS);
glVertex2i(100,50);
glVertex2i(100,130);
glVertex2i(150,130);
glEnd()
glFlush();
}

void main(int argc, char** argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
glutInitWindowSize(640,480);
glutCreateWindow("my first attempt");
glutDisplayFunc(myDisplay);
myInit();
glutMainLoop();
}


Whenever I try to compile it, I get an error from my gl.h header that says that a header included in it (glx.h) doesn’t exist. This file doesn’t exist anywhere on my computer. Am I just missing this file, or does it not come with the windows openGL or what? Anyway, when I try to comment out the glx.h header, I get a warning and a different error saying: c:\program files\microsoft visual studio\vc98\include\gl\gl.h(2) : warning C4182: #include nesting level is 362 deep; possible infinite recursion c:\program files\microsoft visual studio\vc98\include\gl\gl.h(2) : fatal error C1076: compiler limit : internal heap limit reached; use /Zm to specify a higher limit

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Quote:
 Whenever I try to compile it, I get an error from my gl.h header that says that a header included in it (glx.h) doesn’t exist. This file doesn’t exist anywhere on my computer. Am I just missing this file, or does it not come with the windows openGL or what?

I don't think glx.h should exist on your computer - it's for X Windows.. Where did you get your gl.h?

Also, you can replace the lines:
#include <windows.h>#include <gl/Gl.h>#include<gl/glut.h>

by simply
#include <GL/glut.h>

It will keep things portable :P

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I'm not sure why my gl.h file was like that; maybe I’ve overwritten the original. I’ve got the correct one now, but I’ve got another problem. Where do I get the Glut32.lib and Glut32.dll files?

I can get the ones for win 95 and NT from http://www.opengl.org/resources/libraries/glut.html , but I’ve got XP. Should it be alright with XP?

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You could either get the source and compile it yourself, or download binaries from here.
(I don't know if the ones on opengl.org work on XP - they probably do, but the ones linked above specifically say they work on XP.)

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