void init(int c) 
	 = 1 -    keyPressed   
void show()
void refresh() //don't use repaint
void set_view_window(int x, int y, int w, int h)
void set_clip(int x, int y, int w, int h)
int get_bit(int val, int mask)
int get_key_states()
int pointer_pressed_x()
int pointer_pressed_y()
int pointer_released_x()
int pointer_released_y()
int pointer_dragged_x()
int pointer_dragged_y()
int pointer_state()

