#include <SDL.h>

int main(int argc, char *argv[]) {

  SDL_Init(SDL_INIT_VIDEO);
  
  SDL_Surface *screen;
  
  // initial video setup
  screen = SDL_SetVideoMode (640, 480, 0, 0);

  // resize screen in y direction  
  screen = SDL_SetVideoMode(640, 640, 0, 0);
  
  // color the test area, created on the 2nd SDL_SetVideoMode
  Uint32 blue_col = SDL_MapRGB(screen->format, 0, 0, 255);
  SDL_Rect test_area;
  test_area.x = 0;
  test_area.y = 480;
  test_area.w = 639;
  test_area.h = 159;
  SDL_FillRect(screen, &test_area, blue_col);
  SDL_Flip(screen);
  
  int mouse_x;
  int mouse_y;
  int mouse_x_new;
  int mouse_y_new;
  SDL_Event event;
  int quit = 0;
  
  while(!quit) {
    SDL_GetMouseState(&mouse_x_new, &mouse_y_new);

    // if the mouse has moved, write the position to stdout  
    if (mouse_x_new != mouse_x || mouse_y_new != mouse_y) {
      mouse_x = mouse_x_new;
      mouse_y = mouse_y_new;
      fprintf(stdout, "%d,%d\n", mouse_x, mouse_y);
    }
    
    // use windowed X to quit the test
    while (SDL_PollEvent (&event)) {
      if (event.type == SDL_QUIT) {
        quit = 1;
      }
    }
  }
  
  SDL_Quit();
  
  return 0;
}