NAME

       mouse_callback - User specified mouse callback. Allegro game programming library.

SYNOPSIS

       #include <allegro.h>

       extern void (*mouse_callback)(int flags);

DESCRIPTION

       Called  by  the  interrupt  handler whenever the mouse moves or one of the buttons changes
       state. This function must be in locked memory, and must  execute  _very_  quickly!  It  is
       passed  the  event flags that triggered the call, which is a bitmask containing any of the
       values MOUSE_FLAG_MOVE, MOUSE_FLAG_LEFT_DOWN,  MOUSE_FLAG_LEFT_UP,  MOUSE_FLAG_RIGHT_DOWN,
       MOUSE_FLAG_RIGHT_UP,  MOUSE_FLAG_MIDDLE_DOWN, MOUSE_FLAG_MIDDLE_UP, and MOUSE_FLAG_MOVE_Z.
       Note that even if the mouse has more than three buttons,  only  the  first  three  can  be
       trapped using a callback.

SEE ALSO

       install_mouse(3alleg4)