1.1 --- a/include/sgl.h	Fri May 13 09:44:21 2011 +0300
     1.2 +++ b/include/sgl.h	Sat May 14 08:26:10 2011 +0300
     1.3 @@ -37,6 +37,19 @@
     1.4  	SGL_RIGHT_BUTTON
     1.5  };
     1.6  
     1.7 +/* these values happen to coincide with X11 keysyms */
     1.8 +#define SGL_KEY_LSHIFT		0xffe1
     1.9 +#define SGL_KEY_RSHIFT		0xffe2
    1.10 +#define SGL_KEY_LCONTROL	0xffe3
    1.11 +#define SGL_KEY_RCONTROL	0xffe4
    1.12 +#define SGL_KEY_LALT		0xffe9
    1.13 +#define SGL_KEY_RALT		0xffea
    1.14 +
    1.15 +/* for the sgl_modifiers bitmask */
    1.16 +#define SGL_MOD_SHIFT		1
    1.17 +#define SGL_MOD_CONTROL		2
    1.18 +#define SGL_MOD_ALT			4
    1.19 +
    1.20  int sgl_init(void);
    1.21  void sgl_quit(void);
    1.22  
    1.23 @@ -52,6 +65,8 @@
    1.24  void sgl_redisplay(void);
    1.25  void sgl_swap_buffers(void);
    1.26  
    1.27 +int sgl_modifiers(void);
    1.28 +
    1.29  int sgl_process_events(void);
    1.30  void sgl_event_loop(void);
    1.31