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MentalRotation
02-08-2003, 04:05 PM
I keep getting an access violation error from this code. Says it's trying to read address 0xcafedead. I'm in Borland 5.02. Any help would be appreciated!

#include <windows.h>
#include <float.h>
#include <GL/gl.h>
#include <GL/glu.h>
#include <GL/glut.h>
#include <stdlib.h>

GLfloat spin = 0.0;

void init(void)
{
glClearColor(0.0, 0.0, 0.0, 0.0);
glShadeModel(GL_FLAT);
}

void display(void)
{
glClear(GL_COLOR_BUFFER_BIT);
glPushMatrix();
glRotatef(0.0, 0.0, 0.0, 1.0);
glColor3f(1.0, 1.0, 1.0);
glRectf(-25.0, -25.0, 25.0, 25.0);
glPopMatrix();
glutSwapBuffers();
}

void spinDisplay(void)
{
spin = spin + 2.0;
if(spin > 360.0)
spin = spin - 360.0;
glutPostRedisplay();
}

void reshape(int w, int h)
{
glViewport(0, 0, (GLsizei)w, (GLsizei)h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(-50.0, 50.0, -50.0, 50.0, -1.0, 1.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}

void mouse(int button, int state, int x, int y)
{
switch(button)
{
case GLUT_LEFT_BUTTON:
if(state == GLUT_DOWN)
glutIdleFunc(spinDisplay);
break;
case GLUT_MIDDLE_BUTTON:
if(state == GLUT_DOWN)
glutIdleFunc(NULL);
break;
default:
break;
}
}

int Main(int argc, char** argv)
{
_control87(MCW_EM, MCW_EM);
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
glutInitWindowSize(250,250);
glutInitWindowPosition(100,100);
glutCreateWindow(argv[0]);
init();
glutDisplayFunc(display);
glutReshapeFunc(reshape);
glutMouseFunc(mouse);
glutMainLoop();
return 0;
}

Again, any help would be greatly appreciated.

mikael_aronsson
02-09-2003, 12:11 AM
Come on !!!

You could at least give us a line number where it crashes or havnšt you even looked at it with a debugger ?

If you do get a crash, fire up the debugger and let it crash again, you will get a very nice stacktrace and a line number where it crashes, THEN it would be pretty easy to help you out.

The code look's ok after a quick browse, but without more info it's difficult to help you more.

Mikael

02-09-2003, 04:25 AM
0x Cafe Dead is a very unusual read address...

MentalRotation
02-09-2003, 05:02 AM
I got it working. When I ran it this morning, it gave me a compile error with my main function. When I fixed that, it ran fine. I'll try to remember to post the line in the future.