Hi, I can compile and link the following very simple code but it's crashing at runtime. #include <GL/glew.h> int main(int argc,char **argv) { GLuint id; glGenBuffers(1, &id); } Do you know what's wrong with this code ? Here are my OpenGL features : GL_VENDOR: NVIDIA Corporation GL_RENDERER: Quadro FX 3450/4000 SDI/PCI/SSE2 GL_VERSION: 1.5.3 GL_EXTENSIONS: ... GL_ARB_vertex_buffer_object ... (glGenBuffers belongs to the GL_ARB_vertex_buffer_object that I h have) And I have the NVIDIA forceware 72.13 which is not the last one (the last release is the 91.36). Raphael

based on that code you never initalised the function pointer to point to the correct address, thus calling = calling a null (or even random) address, thus crash town..

You have to call glewInit(); before calling any OpenGL extensions.

Thanks for your help. So I initialized the function pointer and added the
glewInit() call but it was still crashing. I eventually added
a glutCreateWindow() call and then it runs normally. The
glewInit() call isn't necessary (here at least).
Here is the code :
//============================================================================
#include <GL/glew.h>
#include <GL/glut.h>
#include <windows.h>
int main(int argc,char **argv) {
GLuint id;
glutCreateWindow("title");
PFNGLGENBUFFERSPROC glGenBuffers = NULL;
PFNGLBINDBUFFERPROC glBindBuffer = NULL;
PFNGLBUFFERDATAPROC glBufferData = NULL;
glGenBuffers = (PFNGLGENBUFFERSPROC)wglGetProcAddress("glGenBuffers");
glBindBuffer = (PFNGLBINDBUFFERPROC)wglGetProcAddress("glBindBuffer");
glBufferData = (PFNGLBUFFERDATAPROC)wglGetProcAddress("glBufferData");
glGenBuffers(1, &id);
glBindBuffer(GL_ARRAY_BUFFER, id);
}
//============================================================================