#include <iostream>

#define GLEW_STATIC

#include <GL/glew.h>

#include <GLFW/glfw3.h>

void key_callback(GLFWwindow* window, int key, int scancode, int action, int mode)

{

// 当用户按下ESC键,我们设置window窗口的WindowShouldClose属性为true

// 关闭应用程序

if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)

glfwSetWindowShouldClose(window, GL_TRUE);

}

int main() {

glfwInit();

glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);

glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);

glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);

glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);

GLFWwindow* window = glfwCreateWindow(800, 600, "LearnOpenGL", nullptr, nullptr);

if (window == nullptr)

{

std::cout << "Failed to create GLFW window" << std::endl;

glfwTerminate();

return -1;

}

glfwMakeContextCurrent(window);

// Init GLEW

glewExperimental = GL_TRUE;

if (glewInit() != GLEW_OK)

{

std::cout << "Failed to initialize GLEW" << std::endl;

return -1;

}

glViewport(0, 0, 800, 600);

while (!glfwWindowShouldClose(window))

{

glfwSetKeyCallback(window, key_callback);

glClearColor(0.2f, 0.3f, 0.3f, 1.0f);

glClear(GL_COLOR_BUFFER_BIT);

glfwPollEvents();

glfwSwapBuffers(window);

}

glfwTerminate();

return 0;

}