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Man Pages


Manual Reference Pages  -  AL_CREATE_SUB_BITMAP (3)

NAME

al_create_sub_bitmap - Allegro 5 API

CONTENTS

Synopsis
Description
See Also

SYNOPSIS

C]
#include <allegro5/allegro.h>

ALLEGRO_BITMAP *al_create_sub_bitmap(ALLEGRO_BITMAP *parent, int x, int y, int w, int h) ]

DESCRIPTION

Creates a sub-bitmap of the parent, at the specified coordinates and of the specified size. A sub-bitmap is a bitmap that shares drawing memory with a pre-existing (parent) bitmap, but possibly with a different size and clipping settings.

The sub-bitmap may originate off or extend past the parent bitmap.

See the discussion in al_get_backbuffer(3) about using sub-bitmaps of the backbuffer.

The parent bitmap[aq]s clipping rectangles are ignored.

If a sub-bitmap was not or cannot be created then NULL is returned.

Note that destroying parents of sub-bitmaps will not destroy the sub-bitmaps; instead the sub-bitmaps become invalid and should no longer be used.

SEE ALSO

al_create_bitmap(3)

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Allegro reference manual AL_CREATE_SUB_BITMAP (3)

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