al_get_native_text_log_event_source man page
al_get_native_text_log_event_source — Allegro 5 API
#include <allegro5/allegro_native_dialog.h> ALLEGRO_EVENT_SOURCE *al_get_native_text_log_event_source( ALLEGRO_TEXTLOG *textlog)
Get an event source for a text log window. The possible events are:
The window was requested to be closed, either by pressing the close button or pressing Escape on the keyboard. The user.data1 field will hold a pointer to the ALLEGRO_TEXTLOG(3) which generated the event. The user.data2 field will be 1 if the event was generated as a result of a key press; otherwise it will be zero.