debian man page for get_gfx_mode_type

get_gfx_mode_type(3alleg4)					  Allegro manual					get_gfx_mode_type(3alleg4)

NAME
       get_gfx_mode_type - Retrieves type information for a specific graphics card. Allegro game programming library.

SYNOPSIS
       #include <allegro.h>

       int get_gfx_mode_type(int graphics_card);

DESCRIPTION
       This function lets you determine the types of operating modes that a specific graphics card driver operates in. It will tell you whether it
       is a windowed, fullscreen, definitely windowed or fullscreen, and/or a magic driver.

       The value returned is a bitfield consisting of these fields:

       GFX_TYPE_UNKNOWN GFX_TYPE_WINDOWED GFX_TYPE_FULLSCREEN GFX_TYPE_DEFINITE GFX_TYPE_MAGIC

       The return value will only be equivalent to GFX_TYPE_UNKNOWN when it is a driver unrecognized on that platform, or it  is  a  bogus  value.
       Test  for  the  other  types by using a bitwise AND. If the driver is windowed or fullscreen, it will also have the definite flag set.  For
       example,

	  int gfx_type = get_gfx_mode_type(GFX_AUTODETECT_WINDOWED);

       gfx_type would have the GFX_TYPE_WINDOWED, GFX_TYPE_DEFINITE, and GFX_TYPE_MAGIC flags set.

       Allegro needs to be initialized first.

       Example:

	  /* Accept the use of only windowed drivers in our selection dialog */
	  int accept_windowed(int card , int w , int h , int color_depth)
	  {
	     if (get_gfx_mode_type(card) & GFX_TYPE_WINDOWED)
		return 0;
	     return 1;
	  }

	  /* In main: */
	  gfx_mode_select_filter(&card, &w, &h, &color_depth, accept_windowed);

RETURN VALUE
       Returns a bitfield describing the graphics mode type.

SEE ALSO
       gfx_mode_select_filter(3alleg4), get_gfx_mode(3alleg4), set_gfx_mode(3alleg4), is_windowed_mode(3alleg4)

Allegro 							   version 4.4.2					get_gfx_mode_type(3alleg4)