02-14-2014
i read very quickly the ncurses manual.
but my question is at a much lower level how the code accesses the bare graphics card?
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LEARN ABOUT OPENDARWIN
gfx_mode_select
gfx_mode_select(3alleg4) Allegro manual gfx_mode_select(3alleg4)
NAME
gfx_mode_select - Displays the Allegro graphics mode selection dialog.
SYNOPSIS
#include <allegro.h>
int gfx_mode_select(int *card, int *w, int *h);
DESCRIPTION
Displays the Allegro graphics mode selection dialog, which allows the user to select a screen mode and graphics card.
The initial values at the addresses provided by card, w, and h are used as the default selections in the dialog if they are found in the
driver and mode lists. If they are not found then the initial selections will be the first in each list. If you wish to ensure that the
initial selection is always the first entry, then initialize the data at the addresses passed to the function to the value of 0 or -1.
If the dialog is OK'd, it stores the selections at the addresses passed to the function.
RETURN VALUE
See the gfx_mode_select_filter function for the return values.
SEE ALSO
gfx_mode_select_ex(3alleg4), gfx_mode_select_filter(3alleg4), set_gfx_mode(3alleg4), gui_fg_color(3alleg4)
Allegro version 4.4.2 gfx_mode_select(3alleg4)