Mercurial > sdl-ios-xcode
annotate docs/html/sdlglgetprocaddress.html @ 172:37e3ca9254c7
Date: Sat, 8 Sep 2001 04:42:23 +0200
From: Max Horn <max@quendi.de>
Subject: SDL/OSX: Joystick; Better key handling
I just finished implementing improved keyhandling for OS X (in fact
the code should be easily ported to the "normal" MacOS part of SDL, I
just had no chance yet). Works like this:
First init the mapping table statically like before. Them, it queries
the OS for the "official" key table, then iterates over all 127
scancode and gets the associates ascii code. It ignores everythng
below 32 (has to, as it would lead to many problems if we did not...
e.g. both ESC and NUM LOCk produce an ascii code 27 on my keyboard),
and all stuff above 127 is mapped to SDLK_WORLD_* simply in the order
it is encountered.
In addition, caps lock is now working, too.
The code work flawless for me, but since I only have one keyboard, I
may have not encountered some serious problem... but I am pretty
confident that it is better than the old code in most cases.
The joystick driver works fine for me, too. I think it can be added
to CVS already. It would simply be helpful if more people would test
it. Hm, I wonder if Maelstrom or GLTron has Joystick support? That
would be a wonderful test application :)
I also took the liberty of modifying some text files like BUGS,
README.CVS, README.MacOSX (which now contains the OS X docs I long
promised)
author | Sam Lantinga <slouken@libsdl.org> |
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date | Tue, 11 Sep 2001 19:00:18 +0000 |
parents | 55f1f1b3e27d |
children | e5bc29de3f0a |
rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_GL_GetProcAddress</TITLE | |
5 ><META | |
6 NAME="GENERATOR" | |
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.64 |
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_GL_LoadLibrary" | |
17 HREF="sdlglloadlibrary.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_GL_GetAttribute" | |
20 HREF="sdlglgetattribute.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 | |
31 WIDTH="100%" | |
32 BORDER="0" | |
33 CELLPADDING="0" | |
34 CELLSPACING="0" | |
35 ><TR | |
36 ><TH | |
37 COLSPAN="3" | |
38 ALIGN="center" | |
39 >SDL Library Documentation</TH | |
40 ></TR | |
41 ><TR | |
42 ><TD | |
43 WIDTH="10%" | |
44 ALIGN="left" | |
45 VALIGN="bottom" | |
46 ><A | |
47 HREF="sdlglloadlibrary.html" | |
48 >Prev</A | |
49 ></TD | |
50 ><TD | |
51 WIDTH="80%" | |
52 ALIGN="center" | |
53 VALIGN="bottom" | |
54 ></TD | |
55 ><TD | |
56 WIDTH="10%" | |
57 ALIGN="right" | |
58 VALIGN="bottom" | |
59 ><A | |
60 HREF="sdlglgetattribute.html" | |
61 >Next</A | |
62 ></TD | |
63 ></TR | |
64 ></TABLE | |
65 ><HR | |
66 ALIGN="LEFT" | |
67 WIDTH="100%"></DIV | |
68 ><H1 | |
69 ><A | |
70 NAME="SDLGLGETPROCADDRESS" | |
71 >SDL_GL_GetProcAddress</A | |
72 ></H1 | |
73 ><DIV | |
74 CLASS="REFNAMEDIV" | |
75 ><A | |
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76 NAME="AEN2259" |
0 | 77 ></A |
78 ><H2 | |
79 >Name</H2 | |
80 >SDL_GL_GetProcAddress -- Get the address of a GL function</DIV | |
81 ><DIV | |
82 CLASS="REFSYNOPSISDIV" | |
83 ><A | |
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84 NAME="AEN2262" |
0 | 85 ></A |
86 ><H2 | |
87 >Synopsis</H2 | |
88 ><DIV | |
89 CLASS="FUNCSYNOPSIS" | |
90 ><A | |
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91 NAME="AEN2263" |
0 | 92 ></A |
93 ><P | |
94 ></P | |
95 ><PRE | |
96 CLASS="FUNCSYNOPSISINFO" | |
97 >#include "SDL.h"</PRE | |
98 ><P | |
99 ><CODE | |
100 ><CODE | |
101 CLASS="FUNCDEF" | |
102 >void *<B | |
103 CLASS="FSFUNC" | |
104 >SDL_GL_GetProcAddress</B | |
105 ></CODE | |
106 >(const char* proc);</CODE | |
107 ></P | |
108 ><P | |
109 ></P | |
110 ></DIV | |
111 ></DIV | |
112 ><DIV | |
113 CLASS="REFSECT1" | |
114 ><A | |
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115 NAME="AEN2269" |
0 | 116 ></A |
117 ><H2 | |
118 >Description</H2 | |
119 ><P | |
120 >Returns the address of the GL function <TT | |
121 CLASS="PARAMETER" | |
122 ><I | |
123 >proc</I | |
124 ></TT | |
125 >, or <SPAN | |
126 CLASS="RETURNVALUE" | |
127 >NULL</SPAN | |
128 > if the function is not found. If the GL library is loaded at runtime, with <A | |
129 HREF="sdlglloadlibrary.html" | |
130 ><TT | |
131 CLASS="FUNCTION" | |
132 >SDL_GL_LoadLibrary</TT | |
133 ></A | |
134 >, then <I | |
135 CLASS="EMPHASIS" | |
136 >all</I | |
137 > GL functions must be retrieved this way. Usually this is used to retrieve function pointers to OpenGL extensions.</P | |
138 ></DIV | |
139 ><DIV | |
140 CLASS="REFSECT1" | |
141 ><A | |
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142 NAME="AEN2277" |
0 | 143 ></A |
144 ><H2 | |
145 >Example</H2 | |
146 ><PRE | |
147 CLASS="PROGRAMLISTING" | |
148 >typedef void (*GL_ActiveTextureARB_Func)(unsigned int); | |
149 GL_ActiveTextureARB_Func glActiveTextureARB_ptr = 0; | |
150 int has_multitexture=1; | |
151 . | |
152 . | |
153 . | |
154 /* Get function pointer */ | |
155 glActiveTextureARB_ptr=(GL_ActiveTextureARB_Func) SDL_GL_GetProcAddress("glActiveTextureARB"); | |
156 | |
157 /* Check for a valid function ptr */ | |
158 if(!glActiveTextureARB_ptr){ | |
159 fprintf(stderr, "Multitexture Extensions not present.\n"); | |
160 has_multitexture=0; | |
161 } | |
162 . | |
163 . | |
164 . | |
165 . | |
166 if(has_multitexture){ | |
167 glActiveTextureARB_ptr(GL_TEXTURE0_ARB); | |
168 . | |
169 . | |
170 } | |
171 else{ | |
172 . | |
173 . | |
174 }</PRE | |
175 ></DIV | |
176 ><DIV | |
177 CLASS="REFSECT1" | |
178 ><A | |
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179 NAME="AEN2280" |
0 | 180 ></A |
181 ><H2 | |
182 >See Also</H2 | |
183 ><P | |
184 ><A | |
185 HREF="sdlglloadlibrary.html" | |
186 ><TT | |
187 CLASS="FUNCTION" | |
188 >SDL_GL_LoadLibrary</TT | |
189 ></A | |
190 ></P | |
191 ></DIV | |
192 ><DIV | |
193 CLASS="NAVFOOTER" | |
194 ><HR | |
195 ALIGN="LEFT" | |
196 WIDTH="100%"><TABLE | |
197 WIDTH="100%" | |
198 BORDER="0" | |
199 CELLPADDING="0" | |
200 CELLSPACING="0" | |
201 ><TR | |
202 ><TD | |
203 WIDTH="33%" | |
204 ALIGN="left" | |
205 VALIGN="top" | |
206 ><A | |
207 HREF="sdlglloadlibrary.html" | |
208 >Prev</A | |
209 ></TD | |
210 ><TD | |
211 WIDTH="34%" | |
212 ALIGN="center" | |
213 VALIGN="top" | |
214 ><A | |
215 HREF="index.html" | |
216 >Home</A | |
217 ></TD | |
218 ><TD | |
219 WIDTH="33%" | |
220 ALIGN="right" | |
221 VALIGN="top" | |
222 ><A | |
223 HREF="sdlglgetattribute.html" | |
224 >Next</A | |
225 ></TD | |
226 ></TR | |
227 ><TR | |
228 ><TD | |
229 WIDTH="33%" | |
230 ALIGN="left" | |
231 VALIGN="top" | |
232 >SDL_GL_LoadLibrary</TD | |
233 ><TD | |
234 WIDTH="34%" | |
235 ALIGN="center" | |
236 VALIGN="top" | |
237 ><A | |
238 HREF="video.html" | |
239 >Up</A | |
240 ></TD | |
241 ><TD | |
242 WIDTH="33%" | |
243 ALIGN="right" | |
244 VALIGN="top" | |
245 >SDL_GL_GetAttribute</TD | |
246 ></TR | |
247 ></TABLE | |
248 ></DIV | |
249 ></BODY | |
250 ></HTML | |
251 > |