Can't use certain functions in OpenGL (glGenBuffers)

Question

I have seen similar questions to mine else where but none have answered or fixed my problem.

I have GLEW initiated properly, right after the Context creation but before I call glfwMakeContextCurrent()

After I have initiated I try to use glGenBuffers() but it doesn't work. Throws an error.

My OpenGL version is 3.2 so from what I have read I can use this functionality in my program. Please to let me know otherwise though if I can't. I will try to figure out a different way to do this.

I am using Windows 7 and VS2012, and it seems that everything is linked properly. Hope I provided all the info I needed.

#include <stdlib.h>

#include <stdio.h>

#include <GL/glew.h>

#include <GLFW/glfw3.h>

#include <thread>

int main(){

//Initialize GLFW
if(!glfwInit()){
    printf("GLFW was not initialized successfully!\n");
    std::this_thread::sleep_for(std::chrono::seconds(5));
    exit(EXIT_FAILURE);
}
else{
    printf("GLFW was initialized successfully!\n");
}

glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);

GLFWwindow* window = glfwCreateWindow(800, 600, "PONG!", nullptr, nullptr); // Windowed

glewExperimental = GL_TRUE;
if(!glewInit()){
    printf("GLEW was not initialized successfully!\n");
    std::this_thread::sleep_for(std::chrono::seconds(5));
    exit(EXIT_FAILURE);
}
else{
    printf("GLEW was initialized successfully!\n");
}

glfwMakeContextCurrent(window);

GLuint vertexbuffer;
glGenBuffers(1, &vertexbuffer);

printf("%u\n", vertexbuffer);

fprintf(
    stdout,
    "INFO: The OpenGL version is: %s\n",
    glGetString(GL_VERSION)
);

fprintf(
    stdout,
    "INFO: The GLEW version is: %s\n",
    glewGetString(GLEW_VERSION)
);

while(!glfwWindowShouldClose(window)){
    glfwSwapBuffers(window);
    glfwPollEvents();

    if (glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS){
        glfwDestroyWindow(window);
        window = glfwCreateWindow(800, 600, "PONG!", nullptr, nullptr);
    }
    else if (glfwGetKey(window, GLFW_KEY_F) == GLFW_PRESS){
        glfwDestroyWindow(window);
        window = glfwCreateWindow(800, 600, "PONG!", glfwGetPrimaryMonitor(), nullptr);
    }
}
}

Answer 1

I have GLEW initiated properly, right after the Context creation but before I call glfwMakeContextCurrent()

Welp, there's your problem right there:

Successful creation does not change which context is current. Before you can use the newly created context, you need to make it current using glfwMakeContextCurrent.

Call glewInit() after glfwMakeContextCurrent().