al_register_bitmap_loader
bool al_register_bitmap_loader(const char *extension,
ALLEGRO_BITMAP *(*loader)(const char *filename))
Register a handler for al_load_bitmap. The given function will be used to handle the loading of bitmaps files with the given extension.
The extension should include the leading dot ('.') character. It will be matched case-insensitively.
The loader argument may be NULL to unregister an entry.
Returns true on success, false on error. Returns false if unregistering an entry that doesn't exist.
See also: al_register_bitmap_saver, al_register_bitmap_loader_f
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