Application.cpp

// has to be included first
#include <GL/glew.h>
#include <GLFW/glfw3.h>
#include <iostream>

int main(void)
{
    GLFWwindow* window;

    /* Initialize the library */
    if (!glfwInit())
        return -1;

    /* Create a windowed mode window and its OpenGL context */
    window = glfwCreateWindow(640, 480, "Hello World", NULL, NULL);
    if (!window)
    {
        glfwTerminate();
        return -1;
    }

    // opengl rendering context is created here
	/* Make the window's context current */
    glfwMakeContextCurrent(window);

    // initiating GLEW
	if (glewInit() != GLEW_OK)
	{
        std::cout << "GLEW could not be initialized!" << std::endl;
	}

    std::cout << glGetString(GL_VERSION) << std::endl;

    /* Loop until the user closes the window */
    while (!glfwWindowShouldClose(window))
    {
        /* Render here */
        glClear(GL_COLOR_BUFFER_BIT);

        // testing OpenGL
        glBegin(GL_TRIANGLES);
        glVertex2f(-0.5f, -0.5f);
        glVertex2f(0.5f, 0.5f);
        glVertex2f(0.5f, -0.5f);
        glEnd();

        /* Swap front and back buffers */
        glfwSwapBuffers(window);

        /* Poll for and process events */
        glfwPollEvents();
    }

    glfwTerminate();
    return 0;
}

/*
 * GLEW gives access to the OpenGL functions an all platforms
 * GLEW_STATIC has to be defined (under project properties -> C/C++ -> Preprocessor -> Preprocessor Definitions)
 */