is_memory_bitmap(3alleg4) [opendarwin man page]

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)

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)