view docs/html/sdlenableunicode.html @ 4106:12bb6311fd5d SDL-1.2

Hans de Goede fixed bug #495 When running boswars: http://www.boswars.org/ on a machine with intel integrathed graphics it crashes when it tries to play the initial theora splashscreen video: X Error of failed request: BadAlloc (insufficient resources for operation) Major opcode of failed request: 140 (XVideo) Minor opcode of failed request: 19 () Serial number of failed request: 25 Current serial number in output stream: 26 boswars: xcb_xlib.c:41: xcb_xlib_lock: Assertion `!c->xlib.lock' failed. Aborted I recognized this problem from a few years back, when I encountered it while working on the Xv blitter for xmame. The problem is that for some reason creation the Xvport and XvImage succeeds, and failure (lack of resources / hw capability?) is only indicated during the first XvPut[Shm]Image. I've written a patch for SDL using the work around for this I developed for xmame (and which is still used successfully in xmame after many years of usage). I'll admit it isn't very pretty, but after investigating several possibilities this was the best option, any other fixes would need changes to the SDL api and abi.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 29 Dec 2007 02:23:48 +0000
parents 355632dca928
children
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>SDL_EnableUNICODE</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN5805"
></A
><H2
>Name</H2
>SDL_EnableUNICODE&nbsp;--&nbsp;Enable UNICODE translation</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
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></A
><H2
>Synopsis</H2
><DIV
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><P
></P
><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>int <B
CLASS="FSFUNC"
>SDL_EnableUNICODE</B
></CODE
>(int enable);</CODE
></P
><P
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></DIV
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><DIV
CLASS="REFSECT1"
><A
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></A
><H2
>Description</H2
><P
>Enables/Disables Unicode keyboard translation.</P
><P
>To obtain the character codes corresponding to received keyboard events,
Unicode translation must first be turned on using this function. The
translation incurs a slight overhead for each keyboard event and is therefore
disabled by default. For each subsequently received key down event, the
<TT
CLASS="STRUCTFIELD"
><I
>unicode</I
></TT
> member of the
<A
HREF="sdlkeysym.html"
><SPAN
CLASS="STRUCTNAME"
>SDL_keysym</SPAN
></A
> structure
will then contain the corresponding character code, or zero for keysyms that do
not correspond to any character code.</P
><P
>A value of 1 for <TT
CLASS="PARAMETER"
><I
>enable</I
></TT
> enables Unicode translation;
0 disables it, and -1 leaves it unchanged (useful for querying the current
translation mode).</P
><P
>Note that only key press events will be translated, not release events.</P
></DIV
><DIV
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><A
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></A
><H2
>Return Value</H2
><P
>Returns the previous translation mode (<SPAN
CLASS="RETURNVALUE"
>0</SPAN
> or <SPAN
CLASS="RETURNVALUE"
>1</SPAN
>).</P
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