view docs/html/sdllistmodes.html @ 2320:166400aa33d7

Deleted a call to X__PumpEvents at the end of X11_GL_InitExtensions(). This function is being called from SDL_RecreateWindow at a point when the numwindows value in is incorrect. The result is that an illegal access is being made in X_PumpEvents when it tries to look up the windows ID of the source of an event. Taking out that call does not seem to have any effect on the testgl. But, I would be happy if someone else took a look at this problem and found a fix higher up the stack.
author Bob Pendleton <bob@pendleton.com>
date Sat, 01 Mar 2008 20:34:36 +0000
parents 355632dca928
children
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<HTML
><HEAD
><TITLE
>SDL_ListModes</TITLE
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><HR
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><H1
><A
NAME="SDLLISTMODES"
></A
>SDL_ListModes</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN1159"
></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="AEN1162"
></A
><H2
>Synopsis</H2
><DIV
CLASS="FUNCSYNOPSIS"
><A
NAME="AEN1163"
></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
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN1169"
></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
CLASS="REFSECT1"
><A
NAME="AEN1184"
></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 our 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
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN1187"
></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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