Mercurial > sdl-ios-xcode
annotate docs/html/sdlwmseticon.html @ 968:4675910b0b7b
Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST)
From: Hannu Savolainen
Subject: Re: SDL uses obsolete OSS features
I did some work on getting OSS to work better with SDL. There have been
some problems with select which should be fixed now.
I'm having some problems in understanding what is the purpose of the
DSP_WaitAudio() routine. I added a return to the very beginning of this
routine and commendted out the define for USE_BLOCKING_WRITES. At least
lbreakout2 seems to work as well as earlier. The latencies are the same.
An ordinary blocking write does exactly the same thing than DSP_WaitAudio
does. So I would recommend using the USE_BLOCKING_WRITES approach and
removing everything from the DSP_WaitAudio routine. Also enabling
USE_BLOCKING_WRITES makes it possible to simplify DSP_PlayAudio() because
you don't need to handle the partial writes (the do-while loop).
Attached is a patch against SDL-1.2.7. After these changes SDL will use
OSS as it's designed to be used (make it as simple as possible). This code
should work with all OSS implementations because it uses only the very
fundamental features that have been there since the jurassic times.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Fri, 12 Nov 2004 21:39:04 +0000 |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_WM_SetIcon</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="Window Management" | |
14 HREF="wm.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_WM_GetCaption" | |
17 HREF="sdlwmgetcaption.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_WM_IconifyWindow" | |
20 HREF="sdlwmiconifywindow.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="sdlwmgetcaption.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="sdlwmiconifywindow.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="SDLWMSETICON" | |
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74 ></A |
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75 >SDL_WM_SetIcon</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN3582" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_WM_SetIcon -- Sets the icon for the display window.</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN3585" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN3586" |
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 >void <B | |
106 CLASS="FSFUNC" | |
107 >SDL_WM_SetIcon</B | |
108 ></CODE | |
109 >(SDL_Surface *icon, Uint8 *mask);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN3592" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
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123 >Sets the icon for the display window. Win32 icons must be 32x32.</P |
0 | 124 ><P |
125 >This function must be called before the first call to | |
126 <A | |
127 HREF="sdlsetvideomode.html" | |
128 >SDL_SetVideoMode</A | |
129 >.</P | |
130 ><P | |
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131 >The <TT |
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132 CLASS="PARAMETER" |
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133 ><I |
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134 >mask</I |
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135 ></TT |
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136 > is a bitmask that describes the shape of the |
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137 icon. If <TT |
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138 CLASS="PARAMETER" |
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139 ><I |
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140 >mask</I |
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141 ></TT |
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142 > is NULL, then the shape is determined by |
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143 the colorkey of <TT |
0 | 144 CLASS="PARAMETER" |
145 ><I | |
146 >icon</I | |
147 ></TT | |
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148 >, if any, or makes the icon |
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149 rectangular (no transparency) otherwise.</P |
0 | 150 ><P |
151 >If <TT | |
152 CLASS="PARAMETER" | |
153 ><I | |
154 >mask</I | |
155 ></TT | |
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156 > is non-NULL, it points to a bitmap with bits set |
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157 where the corresponding pixel should be visible. The format of the bitmap is as |
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158 follows: Scanlines come in the usual top-down order. Each scanline consists of |
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159 (width / 8) bytes, rounded up. The most significant bit of each byte represents |
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160 the leftmost pixel.</P |
0 | 161 ></DIV |
162 ><DIV | |
163 CLASS="REFSECT1" | |
164 ><A | |
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165 NAME="AEN3603" |
0 | 166 ></A |
167 ><H2 | |
168 >Example</H2 | |
169 ><PRE | |
170 CLASS="PROGRAMLISTING" | |
171 >SDL_WM_SetIcon(SDL_LoadBMP("icon.bmp"), NULL);</PRE | |
172 ></DIV | |
173 ><DIV | |
174 CLASS="REFSECT1" | |
175 ><A | |
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176 NAME="AEN3606" |
0 | 177 ></A |
178 ><H2 | |
179 >See Also</H2 | |
180 ><P | |
181 ><A | |
182 HREF="sdlsetvideomode.html" | |
183 ><TT | |
184 CLASS="FUNCTION" | |
185 >SDL_SetVideoMode</TT | |
186 ></A | |
187 >, | |
188 <A | |
189 HREF="sdlwmsetcaption.html" | |
190 ><TT | |
191 CLASS="FUNCTION" | |
192 >SDL_WM_SetCaption</TT | |
193 ></A | |
194 ></P | |
195 ></DIV | |
196 ><DIV | |
197 CLASS="NAVFOOTER" | |
198 ><HR | |
199 ALIGN="LEFT" | |
200 WIDTH="100%"><TABLE | |
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201 SUMMARY="Footer navigation table" |
0 | 202 WIDTH="100%" |
203 BORDER="0" | |
204 CELLPADDING="0" | |
205 CELLSPACING="0" | |
206 ><TR | |
207 ><TD | |
208 WIDTH="33%" | |
209 ALIGN="left" | |
210 VALIGN="top" | |
211 ><A | |
212 HREF="sdlwmgetcaption.html" | |
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213 ACCESSKEY="P" |
0 | 214 >Prev</A |
215 ></TD | |
216 ><TD | |
217 WIDTH="34%" | |
218 ALIGN="center" | |
219 VALIGN="top" | |
220 ><A | |
221 HREF="index.html" | |
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222 ACCESSKEY="H" |
0 | 223 >Home</A |
224 ></TD | |
225 ><TD | |
226 WIDTH="33%" | |
227 ALIGN="right" | |
228 VALIGN="top" | |
229 ><A | |
230 HREF="sdlwmiconifywindow.html" | |
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231 ACCESSKEY="N" |
0 | 232 >Next</A |
233 ></TD | |
234 ></TR | |
235 ><TR | |
236 ><TD | |
237 WIDTH="33%" | |
238 ALIGN="left" | |
239 VALIGN="top" | |
240 >SDL_WM_GetCaption</TD | |
241 ><TD | |
242 WIDTH="34%" | |
243 ALIGN="center" | |
244 VALIGN="top" | |
245 ><A | |
246 HREF="wm.html" | |
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247 ACCESSKEY="U" |
0 | 248 >Up</A |
249 ></TD | |
250 ><TD | |
251 WIDTH="33%" | |
252 ALIGN="right" | |
253 VALIGN="top" | |
254 >SDL_WM_IconifyWindow</TD | |
255 ></TR | |
256 ></TABLE | |
257 ></DIV | |
258 ></BODY | |
259 ></HTML | |
260 > |