Breakpoint 1, Callback (data=0xbffff2c4, obj=0xb7dbe150, event_info=0x1) at elmSegment.c:19
19	        printf("event_info = %d\n", (int *)event_info);
(gdb) backtrace
#0  Callback (data=0xbffff2c4, obj=0xb7dbe150, event_info=0x1) at elmSegment.c:19
#1  0x003c408e in evas_object_smart_callback_call (obj=0xb7dbe150, event=0x21f806 "changed", 
    event_info=0x1) at evas_object_smart.c:407
#2  0x001e1bcb in _segment_on (it=0x815f468) at elm_segment_control.c:221
#3  0x001e1ebf in _mouse_up (data=0x815f468, e=0x8071900, obj=0xb7dbf2d0, 
    event_info=0xbffff0f0) at elm_segment_control.c:293
#4  0x0039fb11 in evas_object_event_callback_call (obj=0xb7dbf2d0, 
    type=EVAS_CALLBACK_MOUSE_UP, event_info=0xbffff0f0) at evas_callbacks.c:224
#5  0x0039fbdf in evas_object_event_callback_call (obj=0xb7dbf500, 
    type=EVAS_CALLBACK_MOUSE_UP, event_info=0xbffff0f0) at evas_callbacks.c:253
#6  0x003a509a in evas_event_feed_mouse_up (e=0x8071900, b=1, flags=EVAS_BUTTON_NONE, 
    timestamp=149933938, data=0x0) at evas_events.c:426
#7  0x00a318a4 in _ecore_event_evas_mouse_button (e=0x80d3ee8, press=ECORE_UP)
    at ecore_input_evas.c:176
#8  0x004e553f in _ecore_call_handler_cb () at ecore_private.h:287
#9  _ecore_event_call () at ecore_events.c:691
#10 0x004ea735 in _ecore_main_loop_iterate_internal (once_only=0) at ecore_main.c:1748
#11 0x004ead2f in ecore_main_loop_begin () at ecore_main.c:861
#12 0x001bf987 in elm_run () at elm_main.c:839
#13 0x080488c7 in elm_main (argc=1, argv=0xbffff3a4) at elmSegment.c:48
#14 0x080488fb in main (argc=1, argv=0xbffff3a4) at elmSegment.c:52