GLFW window not responding - c++

Question

I am working on an GLFW desktop application that uses openGL ES 2.0 instead of the normal openGL!
The code that i wrote compiles great but when i run the application i hear some weird sound coming from my laptop and after a few seconds the window of the application goes unresponsive when i close the window the sound stops!
Is it a hardware/software problem or i did something wrong?
this my main.cpp:
#ifndef GLFW_INCLUDE_ES2
#define GLFW_INCLUDE_ES2
#endif
#include "game.h"
#include <GLFW/glfw3.h>
int init_gl();
void shutdown_gl();
void set_main_loop();
GLFWwindow* window;
int main()
{
if (init_gl() == GL_TRUE) {
on_surface_created();
on_surface_changed();
set_main_loop();
}
shutdown_gl();
return 0;
}
void shutdown_gl()
{
glfwDestroyWindow(window);
glfwTerminate();
}
int init_gl()
{
const int width = 480,
height = 800;
if (glfwInit() != GL_TRUE) {
return GL_FALSE;
}
window = glfwCreateWindow(width, height, "Simple example", NULL, NULL);
if (!window) {
return GL_FALSE;
}
glfwMakeContextCurrent(window);
return GL_TRUE;
}
void set_main_loop()
{
while (!glfwWindowShouldClose(window))
{
on_draw_frame();
glfwSwapBuffers(window);
}
}
tell me if u need the code from game.cpp!
The code is compiled on Ubuntu 14.04 using g++ with the commands:
g++ -I. -I../common -c main.cpp ../common/game.cpp
g++ main.o game.o -o main.exec -lglfw3 -lX11 -lXrandr -lXinerama -lXi -lXxf86vm -lXcursor -lGL -lpthread

Answer 1

You need to call glfwPollEvents() in your loop, however I'm not 100% sure as the sound could be caused by the application not being vsync-d.
Reference:
http://www.glfw.org/docs/latest/quick.html