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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
line wrap: on
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<HTML
><HEAD
><TITLE
>CDROM Examples</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
"><LINK
REL="HOME"
TITLE="SDL Library Documentation"
HREF="index.html"><LINK
REL="UP"
TITLE="Examples"
HREF="guideexamples.html"><LINK
REL="PREVIOUS"
TITLE="Audio Examples"
HREF="guideaudioexamples.html"><LINK
REL="NEXT"
TITLE="Time Examples"
HREF="guidetimeexamples.html"></HEAD
><BODY
CLASS="SECT1"
BGCOLOR="#FFF8DC"
TEXT="#000000"
LINK="#0000ee"
VLINK="#551a8b"
ALINK="#ff0000"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>SDL Library Documentation</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="guideaudioexamples.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
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>Chapter 4. Examples</TD
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WIDTH="10%"
ALIGN="right"
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><A
HREF="guidetimeexamples.html"
ACCESSKEY="N"
>Next</A
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><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="GUIDECDROMEXAMPLES"
></A
>CDROM Examples</H1
><P
></P
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN393"
></A
>Listing CD-ROM drives</H2
><P
><PRE
CLASS="PROGRAMLISTING"
>    #include "SDL.h"

    /* Initialize SDL first */
    if ( SDL_Init(SDL_INIT_CDROM) &#60; 0 ) {
        fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError());
        exit(1);
    }
    atexit(SDL_Quit);

    /* Find out how many CD-ROM drives are connected to the system */
    printf("Drives available: %d\n", SDL_CDNumDrives());
    for ( i=0; i&#60;SDL_CDNumDrives(); ++i ) {
        printf("Drive %d:  \"%s\"\n", i, SDL_CDName(i));
    }</PRE
></P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN397"
></A
>Opening the default drive</H2
><P
><PRE
CLASS="PROGRAMLISTING"
>    SDL_CD *cdrom;
    CDstatus status;
    char *status_str;

    cdrom = SDL_CDOpen(0);
    if ( cdrom == NULL ) {
        fprintf(stderr, "Couldn't open default CD-ROM drive: %s\n",
                        SDL_GetError());
        exit(2);
    }

    status = SDL_CDStatus(cdrom);
    switch (status) {
        case CD_TRAYEMPTY:
            status_str = "tray empty";
            break;
        case CD_STOPPED:
            status_str = "stopped";
            break;
        case CD_PLAYING:
            status_str = "playing";
            break;
        case CD_PAUSED:
            status_str = "paused";
            break;
        case CD_ERROR:
            status_str = "error state";
            break;
    }
    printf("Drive status: %s\n", status_str);
    if ( status &#62;= CD_PLAYING ) {
        int m, s, f;
        FRAMES_TO_MSF(cdrom-&#62;cur_frame, &#38;m, &#38;s, &#38;f);
        printf("Currently playing track %d, %d:%2.2d\n",
        cdrom-&#62;track[cdrom-&#62;cur_track].id, m, s);
    }</PRE
></P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN401"
></A
>Listing the tracks on a CD</H2
><P
><PRE
CLASS="PROGRAMLISTING"
>    SDL_CD *cdrom;          /* Assuming this has already been set.. */
    int i;
    int m, s, f;

    SDL_CDStatus(cdrom);
    printf("Drive tracks: %d\n", cdrom-&#62;numtracks);
    for ( i=0; i&#60;cdrom-&#62;numtracks; ++i ) {
        FRAMES_TO_MSF(cdrom-&#62;track[i].length, &#38;m, &#38;s, &#38;f);
        if ( f &#62; 0 )
            ++s;
        printf("\tTrack (index %d) %d: %d:%2.2d\n", i,
        cdrom-&#62;track[i].id, m, s);
    }</PRE
></P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN405"
></A
>Play an entire CD</H2
><P
><PRE
CLASS="PROGRAMLISTING"
>    SDL_CD *cdrom;          /* Assuming this has already been set.. */

    // Play entire CD:
    if ( CD_INDRIVE(SDL_CDStatus(cdrom)) )
        SDL_CDPlayTracks(cdrom, 0, 0, 0, 0);

        // Play last track:
        if ( CD_INDRIVE(SDL_CDStatus(cdrom)) ) {
            SDL_CDPlayTracks(cdrom, cdrom-&#62;numtracks-1, 0, 0, 0);
        }

        // Play first and second track and 10 seconds of third track:
        if ( CD_INDRIVE(SDL_CDStatus(cdrom)) )
            SDL_CDPlayTracks(cdrom, 0, 0, 2, CD_FPS * 10);</PRE
></P
></DIV
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
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><TR
><TD
WIDTH="33%"
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VALIGN="top"
><A
HREF="guideaudioexamples.html"
ACCESSKEY="P"
>Prev</A
></TD
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WIDTH="34%"
ALIGN="center"
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><A
HREF="index.html"
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>Home</A
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WIDTH="33%"
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