5 extern int win_width, win_height;
6 extern bool opt_gear_wireframe;
12 void app_reshape(int x, int y);
14 void app_keyboard(int key, bool pressed);
15 void app_mouse_button(int bn, bool pressed, int x, int y);
16 void app_mouse_motion(int x, int y);
18 // the following functions are implemented by the backend (main.cc)
20 void app_swap_buffers();