al_win_remove_window_callback man page
al_win_remove_window_callback — Allegro 5 API
#include <allegro5/allegro_windows.h> bool al_win_remove_window_callback(ALLEGRO_DISPLAY *display, bool (*callback)(ALLEGRO_DISPLAY *display, UINT message, WPARAM wparam, LPARAM lparam, LRESULT *result, void *userdata), void *userdata)
Removes the callback that was previously registered with al_win_add_window_callback(3). The
userdata pointer must be the same as what was used during the registration of the callback.
Returns true if the callback was removed.