is_memory_bitmap(3alleg4) Allegro manual is_memory_bitmap(3alleg4)NAME
is_memory_bitmap - Tells if a bitmap is a memory bitmap. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
int is_memory_bitmap(BITMAP *bmp);
DESCRIPTION
Returns TRUE if bmp is a memory bitmap, ie. it was created by calling create_bitmap() or loaded from a grabber datafile or image file. Mem-
ory bitmaps can be accessed directly via the line pointers in the bitmap structure, eg. bmp->line[y][x] = color.
SEE ALSO is_linear_bitmap(3alleg4), is_planar_bitmap(3alleg4)Allegro version 4.4.2 is_memory_bitmap(3alleg4)
Check Out this Related Man Page
create_bitmap(3alleg4) Allegro manual create_bitmap(3alleg4)NAME
create_bitmap - Creates a memory bitmap. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
BITMAP *create_bitmap(int width, int height);
DESCRIPTION
Creates a memory bitmap sized width by height. The bitmap will have clipping turned on, and the clipping rectangle set to the full size of
the bitmap. The image memory will not be cleared, so it will probably contain garbage: you should clear the bitmap before using it. This
routine always uses the global pixel format, as specified by calling set_color_depth(). The minimum height of the BITMAP must be 1 and
width can't be negative. Example:
/* Create a 10 pixel tall bitmap, as wide as the screen. */
BITMAP *bmp = create_bitmap(SCREEN_W, 10);
if (!bmp)
abort_on_error("Couldn't create bitmap!");
/* Use the bitmap. */
...
/* Destroy it when we don't need it any more. */
destroy_bitmap(bmp);
RETURN VALUE
Returns a pointer to the created bitmap, or NULL if the bitmap could not be created. Remember to free this bitmap later to avoid memory
leaks.
SEE ALSO create_bitmap_ex(3alleg4), create_sub_bitmap(3alleg4), create_video_bitmap(3alleg4), create_system_bitmap(3alleg4), destroy_bit-
map(3alleg4), set_color_depth(3alleg4), is_memory_bitmap(3alleg4), clear_bitmap(3alleg4), clear_to_color(3alleg4)Allegro version 4.4.2 create_bitmap(3alleg4)
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