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mouse_callback(3) Allegro manual mouse_callback(3)

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

#include <allegro.h>
extern void (*mouse_callback)(int flags);

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.

install_mouse(3)
version 4.4.2 Allegro

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