SDL window not respondig - c++

Question

My SDL window crashes when clicking or minimizes it, the background is white and the OpenGL does not update the screen more. Follows the code:
#include <stdio.h>
#include <SDL.h>
#include <SDL_opengl.h>
const int SCREEN_WIDTH = 640;
const int SCREEN_HEIGHT = 480;
const char * SCREEN_NAME = "Tetris SDL";
SDL_Window *window;
SDL_GLContext glcontext;
int init();
void main_loop();
void quit();
void events();
void update();
void draw();
int main(int argc, char* args[])
{
if(!init())
quit();
main_loop();
quit();
}
int init()
{
if (SDL_Init(SDL_INIT_VIDEO) < 0)
return 0;
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
SDL_GL_SetAttribute(SDL_GL_ACCUM_RED_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_ACCUM_GREEN_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_ACCUM_BLUE_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_ACCUM_ALPHA_SIZE, 0);
SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
window = SDL_CreateWindow(SCREEN_NAME, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_OPENGL);
if(!window)
return 0;
glcontext = SDL_GL_CreateContext(window);
glViewport(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
return 1;
}
void main_loop()
{
while(true)
{
events();
update();
draw();
//only for test
SDL_Delay(16);
}
}
void events(){}
void update(){}
void draw()
{
glClear(GL_COLOR_BUFFER_BIT);
glClearColor(0.0, 0.0, 0.0, 0.0);
glBegin(GL_TRIANGLES);
glColor3f(1,0,0); glVertex2f(0.0f,0.5f);
glColor3f(0,1,0); glVertex2f(-0.5f, -0.5f);
glColor3f(0,0,1); glVertex2f(0.5f, -0.5f);
glEnd();
SDL_GL_SwapWindow(window);
}
void quit()
{
SDL_GL_DeleteContext(glcontext);
SDL_DestroyWindow(window);
SDL_Quit();
}
I'm using SDL 2.0 and GNU GCC compiler and Windows XP. Does anyone know what could be the problem?

Answer 1

You don't handle any events while in the loop.
If you don't do that then the event of minimizing will not be handled (usually means the window buffer is freed to be use by someone else).