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mouse_callback(3) Allegro manual mouse_callback(3)
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(3)
Allegro version 4.4.2 mouse_callback(3)