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is_sub_bitmap(3alleg4) [opendarwin man page]

is_sub_bitmap(3alleg4)						  Allegro manual					    is_sub_bitmap(3alleg4)

is_sub_bitmap - Tells if a bitmap is a sub bitmap. Allegro game programming library. SYNOPSIS
#include <allegro.h> int is_sub_bitmap(BITMAP *bmp); DESCRIPTION
Returns TRUE if bmp is a sub-bitmap. SEE ALSO
create_sub_bitmap(3alleg4) Allegro version 4.4.2 is_sub_bitmap(3alleg4)

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create_sub_bitmap(3alleg4)					  Allegro manual					create_sub_bitmap(3alleg4)

create_sub_bitmap - Creates a memory sub bitmap. Allegro game programming library. SYNOPSIS
#include <allegro.h> BITMAP *create_sub_bitmap(BITMAP *parent, int x, y, width, height); DESCRIPTION
Creates a sub-bitmap, ie. a bitmap sharing drawing memory with a pre-existing bitmap, but possibly with a different size and clipping set- tings. When creating a sub-bitmap of the mode-X screen, the x position must be a multiple of four. The sub-bitmap width and height can extend beyond the right and bottom edges of the parent (they will be clipped), but the origin point must lie within the parent region. RETURN VALUE
Returns a pointer to the created sub bitmap, or NULL if the sub bitmap could not be created. Remember to free the sub bitmap before freeing the parent bitmap to avoid memory leaks and potential crashes accessing memory which has been freed. SEE ALSO
create_bitmap(3alleg4), create_bitmap_ex(3alleg4), destroy_bitmap(3alleg4), is_sub_bitmap(3alleg4), clear_bitmap(3alleg4), clear_to_color(3alleg4), expat(3alleg4), exscroll(3alleg4), exswitch(3alleg4) Allegro version 4.4.2 create_sub_bitmap(3alleg4)
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