05-01-2009
Quote:
Originally Posted by
cfajohnson
At the top of the buffer, press Ctrl+<space>, move to the bottom of the buffer and press cntl+alt+\
Sir,
I am new to emacs.
Can you please explain what is buffer.Is it the white screen that comes up when i start emacs on windows
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LEARN ABOUT OPENDARWIN
create_sub_zbuffer
create_sub_zbuffer(3alleg4) Allegro manual create_sub_zbuffer(3alleg4)
NAME
create_sub_zbuffer - Creates a sub-z-buffer. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
ZBUFFER *create_sub_zbuffer(ZBUFFER *parent, int x, int y, int width, int height);
DESCRIPTION
Creates a sub-z-buffer, ie. a z-buffer sharing drawing memory with a pre-existing z-buffer, but possibly with a different size. The same
rules as for sub-bitmaps apply: the sub-z-buffer 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.
When drawing z-buffered to a bitmap, the top left corner of the bitmap is always mapped to the top left corner of the current z-buffer. So
this function is primarily useful if you want to draw to a sub-bitmap and use the corresponding sub-area of the z-buffer. In other cases,
eg. if you just want to draw to a sub-bitmap of screen (and not to other parts of screen), then you would usually want to create a normal
z-buffer (not sub-z-buffer) the size of the visible screen. You don't need to first create a z-buffer the size of the virtual screen and
then a sub-z-buffer of that.
RETURN VALUE
Returns the pointer to the sub ZBUFFER or NULL if there was an error. Remember to destroy the ZBUFFER once you are done with it, to avoid
having memory leaks.
SEE ALSO
create_zbuffer(3alleg4), create_sub_bitmap(3alleg4), destroy_zbuffer(3alleg4)
Allegro version 4.4.2 create_sub_zbuffer(3alleg4)