al_win_add_window_callback(3alleg5)

💖 al_win_add_window_callback 💖

okay bestie, so you're deep in the Allegro 5 API (that's the manual name btw, the <pink>3alleg5</pink> in the corner is just where she lives) and you wanna get your little gremlin hands on the window messages before Allegro does. say less. this is the function for you. 🪟✨

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🌸 NAME 🌸

al_win_add_window_callback — literally the Allegro 5 API function that lets you peek at a window's messages before Allegro touches them 👀

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🎀 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)

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💅 DESCRIPTION 💅

so the tea is: the callback function you pass in will intercept the window's message before Allegro gets to process it. the way that you're literally cutting the line. 😌

if your callback consumes the event — like, you're taking it, it's yours now, no take-backs — then it should return true. and when it does? Allegro will not do anything with the event. it's giving "you handled it, so I'm gonna mind my business." 🫶

optionally (key word: optionally, no pressure babes) you can use result to customize what Allegro will return in response to this event. by default, Allegro returns TRUE. so if you don't touch it, that's what you get. ✨

the userdata pointer can be used to supply extra context to the callback function — think of it as your little care package, your emotional support pointer, your "here's everything you need to know" bag. 🎒💖

and the callbacks are executed in the same order they were added. first come, first served. no cutting the line, we're all polite here. 👑

returns true if the callback was added. 🌟

⚠️ heads up bestie: if your callback returns true, it's taking ownership of that event and Allegro is fully stepping back. don't do that unless you actually meant it. 💀

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⭐ SINCE ⭐

5.1.2 — an icon, a legend, she's been here since 5.1.2 and she ate. 🍓

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that's the whole vibe, bestie — go forth and intercept those messages responsibly. 🦋💜

— with love from the Allegro reference manual, page al_win_add_window_callback(3alleg5) 💖✨🎀