Mercurial > sdl-ios-xcode
annotate docs/html/sdllockyuvoverlay.html @ 1614:6162b8d921ce
Date: Wed, 29 Mar 2006 17:26:55 +0200 CEST
From: "Fran���is Revol"
Subject: [SDL] BeOS port fix: PrintScreen key crashing
It seems the latest SDL crashes when someone hits the PrtScrn key in
ZETA (BeOS R6), somewhere it gets a negative value as key code (or a
big unsigned maybe ?), and uses it as an index in the keysym table...
I'll investigate the cause for the negative value, but it's always
better to check for bounds correctly when indexing a table. The
attached diff fixes it.
Fran���is Revol
--
Software Architect
yellowTAB GmbH
author | Sam Lantinga <slouken@libsdl.org> |
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date | Fri, 31 Mar 2006 06:16:20 +0000 |
parents | 355632dca928 |
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rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_LockYUVOverlay</TITLE | |
5 ><META | |
6 NAME="GENERATOR" | |
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ |
0 | 8 "><LINK |
9 REL="HOME" | |
10 TITLE="SDL Library Documentation" | |
11 HREF="index.html"><LINK | |
12 REL="UP" | |
13 TITLE="Video" | |
14 HREF="video.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_CreateYUVOverlay" | |
17 HREF="sdlcreateyuvoverlay.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_UnlockYUVOverlay" | |
20 HREF="sdlunlockyuvoverlay.html"></HEAD | |
21 ><BODY | |
22 CLASS="REFENTRY" | |
23 BGCOLOR="#FFF8DC" | |
24 TEXT="#000000" | |
25 LINK="#0000ee" | |
26 VLINK="#551a8b" | |
27 ALINK="#ff0000" | |
28 ><DIV | |
29 CLASS="NAVHEADER" | |
30 ><TABLE | |
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31 SUMMARY="Header navigation table" |
0 | 32 WIDTH="100%" |
33 BORDER="0" | |
34 CELLPADDING="0" | |
35 CELLSPACING="0" | |
36 ><TR | |
37 ><TH | |
38 COLSPAN="3" | |
39 ALIGN="center" | |
40 >SDL Library Documentation</TH | |
41 ></TR | |
42 ><TR | |
43 ><TD | |
44 WIDTH="10%" | |
45 ALIGN="left" | |
46 VALIGN="bottom" | |
47 ><A | |
48 HREF="sdlcreateyuvoverlay.html" | |
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49 ACCESSKEY="P" |
0 | 50 >Prev</A |
51 ></TD | |
52 ><TD | |
53 WIDTH="80%" | |
54 ALIGN="center" | |
55 VALIGN="bottom" | |
56 ></TD | |
57 ><TD | |
58 WIDTH="10%" | |
59 ALIGN="right" | |
60 VALIGN="bottom" | |
61 ><A | |
62 HREF="sdlunlockyuvoverlay.html" | |
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63 ACCESSKEY="N" |
0 | 64 >Next</A |
65 ></TD | |
66 ></TR | |
67 ></TABLE | |
68 ><HR | |
69 ALIGN="LEFT" | |
70 WIDTH="100%"></DIV | |
71 ><H1 | |
72 ><A | |
73 NAME="SDLLOCKYUVOVERLAY" | |
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74 ></A |
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75 >SDL_LockYUVOverlay</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN2844" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_LockYUVOverlay -- Lock an overlay</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN2847" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN2848" |
0 | 95 ></A |
96 ><P | |
97 ></P | |
98 ><PRE | |
99 CLASS="FUNCSYNOPSISINFO" | |
100 >#include "SDL.h"</PRE | |
101 ><P | |
102 ><CODE | |
103 ><CODE | |
104 CLASS="FUNCDEF" | |
105 >int <B | |
106 CLASS="FSFUNC" | |
107 >SDL_LockYUVOverlay</B | |
108 ></CODE | |
109 >(SDL_Overlay *overlay);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN2854" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >Much the same as <A | |
124 HREF="sdllocksurface.html" | |
125 ><TT | |
126 CLASS="FUNCTION" | |
127 >SDL_LockSurface</TT | |
128 ></A | |
129 >, <TT | |
130 CLASS="FUNCTION" | |
131 >SDL_LockYUVOverlay</TT | |
132 > locks the <A | |
133 HREF="sdloverlay.html" | |
134 ><TT | |
135 CLASS="PARAMETER" | |
136 ><I | |
137 >overlay</I | |
138 ></TT | |
139 ></A | |
140 > for direct access to pixel data.</P | |
141 ></DIV | |
142 ><DIV | |
143 CLASS="REFSECT1" | |
144 ><A | |
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145 NAME="AEN2862" |
0 | 146 ></A |
147 ><H2 | |
148 >Return Value</H2 | |
149 ><P | |
150 >Returns <SPAN | |
151 CLASS="RETURNVALUE" | |
152 >0</SPAN | |
153 > on success, or <SPAN | |
154 CLASS="RETURNVALUE" | |
155 >-1</SPAN | |
156 > on an error.</P | |
157 ></DIV | |
158 ><DIV | |
159 CLASS="REFSECT1" | |
160 ><A | |
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161 NAME="AEN2867" |
0 | 162 ></A |
163 ><H2 | |
164 >See Also</H2 | |
165 ><P | |
166 ><A | |
167 HREF="sdlunlockyuvoverlay.html" | |
168 ><TT | |
169 CLASS="FUNCTION" | |
170 >SDL_UnlockYUVOverlay</TT | |
171 ></A | |
172 >, | |
173 <A | |
174 HREF="sdlcreateyuvoverlay.html" | |
175 ><TT | |
176 CLASS="FUNCTION" | |
177 >SDL_CreateYUVOverlay</TT | |
178 ></A | |
179 >, | |
180 <A | |
181 HREF="sdloverlay.html" | |
182 ><SPAN | |
183 CLASS="STRUCTNAME" | |
184 >SDL_Overlay</SPAN | |
185 ></A | |
186 ></P | |
187 ></DIV | |
188 ><DIV | |
189 CLASS="NAVFOOTER" | |
190 ><HR | |
191 ALIGN="LEFT" | |
192 WIDTH="100%"><TABLE | |
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193 SUMMARY="Footer navigation table" |
0 | 194 WIDTH="100%" |
195 BORDER="0" | |
196 CELLPADDING="0" | |
197 CELLSPACING="0" | |
198 ><TR | |
199 ><TD | |
200 WIDTH="33%" | |
201 ALIGN="left" | |
202 VALIGN="top" | |
203 ><A | |
204 HREF="sdlcreateyuvoverlay.html" | |
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205 ACCESSKEY="P" |
0 | 206 >Prev</A |
207 ></TD | |
208 ><TD | |
209 WIDTH="34%" | |
210 ALIGN="center" | |
211 VALIGN="top" | |
212 ><A | |
213 HREF="index.html" | |
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214 ACCESSKEY="H" |
0 | 215 >Home</A |
216 ></TD | |
217 ><TD | |
218 WIDTH="33%" | |
219 ALIGN="right" | |
220 VALIGN="top" | |
221 ><A | |
222 HREF="sdlunlockyuvoverlay.html" | |
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223 ACCESSKEY="N" |
0 | 224 >Next</A |
225 ></TD | |
226 ></TR | |
227 ><TR | |
228 ><TD | |
229 WIDTH="33%" | |
230 ALIGN="left" | |
231 VALIGN="top" | |
232 >SDL_CreateYUVOverlay</TD | |
233 ><TD | |
234 WIDTH="34%" | |
235 ALIGN="center" | |
236 VALIGN="top" | |
237 ><A | |
238 HREF="video.html" | |
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239 ACCESSKEY="U" |
0 | 240 >Up</A |
241 ></TD | |
242 ><TD | |
243 WIDTH="33%" | |
244 ALIGN="right" | |
245 VALIGN="top" | |
246 >SDL_UnlockYUVOverlay</TD | |
247 ></TR | |
248 ></TABLE | |
249 ></DIV | |
250 ></BODY | |
251 ></HTML | |
252 > |