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><H1
><A
NAME="SDLLISTMODES"
>SDL_ListModes</A
></H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN776"
></A
><H2
>Name</H2
>SDL_ListModes&nbsp;--&nbsp;Returns a pointer to an array of available screen dimensions for
the given format and video flags</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN779"
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><H2
>Synopsis</H2
><DIV
CLASS="FUNCSYNOPSIS"
><A
NAME="AEN780"
></A
><P
></P
><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>SDL_Rect **<B
CLASS="FSFUNC"
>SDL_ListModes</B
></CODE
>(SDL_PixelFormat *format, Uint32 flags);</CODE
></P
><P
></P
></DIV
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><DIV
CLASS="REFSECT1"
><A
NAME="AEN786"
></A
><H2
>Description</H2
><P
>Return a pointer to an array of available screen dimensions for the given
format and video flags, sorted largest to smallest.  Returns
<TT
CLASS="LITERAL"
>NULL</TT
> if there are no dimensions available for a particular
format, or <SPAN
CLASS="RETURNVALUE"
>-1</SPAN
> if any dimension is okay for
the given format.</P
><P
>If <TT
CLASS="PARAMETER"
><I
>format</I
></TT
> is <TT
CLASS="LITERAL"
>NULL</TT
>, the mode list
will be for the format returned by <A
HREF="sdlgetvideoinfo.html"
>SDL_GetVideoInfo()</A
>-&#62;<TT
CLASS="STRUCTFIELD"
><I
>vfmt</I
></TT
>. The <TT
CLASS="PARAMETER"
><I
>flag</I
></TT
> parameter is an OR'd combination of <A
HREF="sdlsurface.html"
>surface</A
> flags. The flags are the same as those used <A
HREF="sdlsetvideomode.html"
><TT
CLASS="FUNCTION"
>SDL_SetVideoMode</TT
></A
> and they play a strong role in deciding what modes are valid. For instance, if you pass <TT
CLASS="LITERAL"
>SDL_HWSURFACE</TT
> as a flag only modes that support hardware video surfaces will be returned.</P
></DIV
><DIV
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><A
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></A
><H2
>Example</H2
><PRE
CLASS="PROGRAMLISTING"
>SDL_Rect **modes;
int i;
.
.
.

/* Get available fullscreen/hardware modes */
modes=SDL_ListModes(NULL, SDL_FULLSCREEN|SDL_HWSURFACE);

/* Check is there are any modes available */
if(modes == (SDL_Rect **)0){
  printf("No modes available!\n");
  exit(-1);
}

/* Check if or resolution is restricted */
if(modes == (SDL_Rect **)-1){
  printf("All resolutions available.\n");
}
else{
  /* Print valid modes */
  printf("Available Modes\n");
  for(i=0;modes[i];++i)
    printf("  %d x %d\n", modes[i]-&#62;w, modes[i]-&#62;h);
}
.
.</PRE
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><A
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></A
><H2
>See Also</H2
><P
><A
HREF="sdlsetvideomode.html"
><TT
CLASS="FUNCTION"
>SDL_SetVideoMode</TT
></A
>,
<A
HREF="sdlgetvideoinfo.html"
><TT
CLASS="FUNCTION"
>SDL_GetVideoInfo</TT
></A
>,
<A
HREF="sdlrect.html"
><SPAN
CLASS="STRUCTNAME"
>SDL_Rect</SPAN
></A
>,
<A
HREF="sdlpixelformat.html"
><SPAN
CLASS="STRUCTNAME"
>SDL_PixelFormat</SPAN
></A
></P
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>
author	Sam Lantinga <slouken@libsdl.org>
date	Mon, 22 Oct 2001 21:34:50 +0000
parents	e5bc29de3f0a
children	355632dca928