NAME

       al_win_add_window_callback - Allegro 5 API

SYNOPSIS

              #include <allegro5/allegro_windows.h>

              bool al_win_add_window_callback(ALLEGRO_DISPLAY *display,
                 bool (*callback)(ALLEGRO_DISPLAY *display, UINT message, WPARAM wparam,
                 LPARAM lparam, LRESULT *result, void *userdata), void *userdata)

DESCRIPTION

       The  specified callback function will intercept the window’s message before Allegro processes it.  If the
       callback function consumes the event, then it should return true.  In that case, Allegro will not do any‐
       thing with the event.

       Optionally, you may use result to customize what Allegro will return return in response  to  this  event.
       By default, Allegro returns TRUE.

       The userdata pointer can be used to supply additional context to the callback function.

       The callbacks are executed in the same order they were added.

       Returns true if the callback was added.

SINCE

       5.1.2

Allegro reference manual                                                     al_win_add_window_callback(3alleg5)