Mercurial > sdl-ios-xcode
annotate docs/html/sdlvideomodeok.html @ 4324:1496aa09e41e SDL-1.2
Steven Noonan to sdl
While trying to build the SDLMain.m included with SDL 1.2.14, with
#define SDL_USE_NIB_FILE 1:
/Users/steven/Development/darwinia/targets/macosx/Darwinia/SDLMain.m:
In function '-[SDLMain fixMenu:withAppName:]':
/Users/steven/Development/darwinia/targets/macosx/Darwinia/SDLMain.m:122:
warning: 'sizeToFit' is deprecated (declared at
/Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSMenu.h:281)
/Users/steven/Development/darwinia/targets/macosx/Darwinia/SDLMain.m:
In function 'main':
/Users/steven/Development/darwinia/targets/macosx/Darwinia/SDLMain.m:376:
warning: 'poseAsClass:' is deprecated (declared at
/Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:127)
/Users/steven/Development/darwinia/targets/macosx/Darwinia/SDLMain.m:376:
error: 'poseAsClass:' is unavailable (declared at
/Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:127)
/Users/steven/Development/darwinia/targets/macosx/Darwinia/SDLMain.m:377:
warning: passing argument 2 of 'NSApplicationMain' from incompatible
pointer type
Eric Wing to Sam
I don't have time today to look at this in detail, but the problem is definitely the poseAsClass: method.
This was deprecated in Obj-C 2.0 and not retained in 64-bit.
I've never used this method and it has always been limited to esoteric uses. I think this is why Apple wanted to dump it (among complicating some other things they do). I have read about others getting bit by this when migrating. Long story short, there really isn't a migration path for this method. The question that then must be asked is why are we using it (what does it accomplish), and then figure out the 'proper' way of accomplishing that.
Glancing at SDLMain.m, it's not obvious to me why it is there or what it is really accomplishing. My only speculation is that NSApplicationMain hardcodes something to look for NSApplication and a subclass (SDLApplication) fails for some reason (assuming that the original coder did this for good reason).
Three thoughts come to mind.
1) The Info.plist has properties to control things related to the startup class and nib.
NSPrincipalClass, NSMainNibFile
Maybe principle class needs to be SDLApplication and we can delete the poseAs
2) I was told that 10.6 introduced new APIs to make programatic NIB wrangling and avoidance easier. Unfortunately, I don't know the specifics.
3) Instead of subclassing NSApplication in SDLMain.m, maybe we can just add a category. It looks like the following is the only thing that is done (quick glance):
@interface SDLApplication : NSApplication
@end
@implementation SDLApplication
/* Invoked from the Quit menu item */
- (void)terminate:(id)sender
{
/* Post a SDL_QUIT event */
SDL_Event event;
event.type = SDL_QUIT;
SDL_PushEvent(&event);
}
@end
So instead, we change this to: (warning written in mail and untested)
@interface NSApplication (SDLApplication)
- (void) terminate:(id)sender;
@end
@implementation NSApplication (SDLApplication)
/* Invoked from the Quit menu item */
- (void)terminate:(id)sender
{
/* Post a SDL_QUIT event */
SDL_Event event;
event.type = SDL_QUIT;
SDL_PushEvent(&event);
}
@end
Then everywhere SDLApplication is used, we change it to NSApplication (and remove the poseAsClass line).
Perhaps you could ask the bug reporter to try this solution (#3).
And if that fails, maybe try #1.
-Eric
Steven Noonan to Sam
The suggested change (diff below) seems to work fine.
- Steven
author | Sam Lantinga <slouken@libsdl.org> |
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date | Mon, 12 Oct 2009 21:07:12 +0000 |
parents | 355632dca928 |
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rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_VideoModeOK</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_ListModes" | |
17 HREF="sdllistmodes.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_SetVideoMode" | |
20 HREF="sdlsetvideomode.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="sdllistmodes.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="sdlsetvideomode.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="SDLVIDEOMODEOK" | |
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74 ></A |
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75 >SDL_VideoModeOK</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN1202" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_VideoModeOK -- Check to see if a particular video mode is supported.</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN1205" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN1206" |
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_VideoModeOK</B | |
108 ></CODE | |
109 >(int width, int height, int bpp, Uint32 flags);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN1212" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 ><TT | |
124 CLASS="FUNCTION" | |
125 >SDL_VideoModeOK</TT | |
126 > returns <SPAN | |
127 CLASS="RETURNVALUE" | |
128 >0</SPAN | |
129 > | |
130 if the requested mode is not supported under any bit depth, or returns the | |
131 bits-per-pixel of the closest available mode with the given width, height and requested <A | |
132 HREF="sdlsurface.html" | |
133 >surface</A | |
134 > flags (see <A | |
135 HREF="sdlsetvideomode.html" | |
136 ><TT | |
137 CLASS="FUNCTION" | |
138 >SDL_SetVideoMode</TT | |
139 ></A | |
140 >).</P | |
141 ><P | |
142 >The bits-per-pixel value returned is only a suggested mode. You can usually request and bpp you want when <A | |
143 HREF="sdlsetvideomode.html" | |
144 >setting</A | |
145 > the video mode and SDL will emulate that color depth with a shadow video surface.</P | |
146 ><P | |
147 >The arguments to <TT | |
148 CLASS="FUNCTION" | |
149 >SDL_VideoModeOK</TT | |
150 > are the same ones you | |
151 would pass to <A | |
152 HREF="sdlsetvideomode.html" | |
153 >SDL_SetVideoMode</A | |
154 ></P | |
155 ></DIV | |
156 ><DIV | |
157 CLASS="REFSECT1" | |
158 ><A | |
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159 NAME="AEN1225" |
0 | 160 ></A |
161 ><H2 | |
162 >Example</H2 | |
163 ><PRE | |
164 CLASS="PROGRAMLISTING" | |
165 >SDL_Surface *screen; | |
166 Uint32 bpp; | |
167 . | |
168 . | |
169 . | |
170 printf("Checking mode 640x480@16bpp.\n"); | |
171 bpp=SDL_VideoModeOK(640, 480, 16, SDL_HWSURFACE); | |
172 | |
173 if(!bpp){ | |
174 printf("Mode not available.\n"); | |
175 exit(-1); | |
176 } | |
177 | |
178 printf("SDL Recommends 640x480@%dbpp.\n", bpp); | |
179 screen=SDL_SetVideoMode(640, 480, bpp, SDL_HWSURFACE); | |
180 . | |
181 .</PRE | |
182 ></DIV | |
183 ><DIV | |
184 CLASS="REFSECT1" | |
185 ><A | |
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186 NAME="AEN1228" |
0 | 187 ></A |
188 ><H2 | |
189 >See Also</H2 | |
190 ><P | |
191 ><A | |
192 HREF="sdlsetvideomode.html" | |
193 ><TT | |
194 CLASS="FUNCTION" | |
195 >SDL_SetVideoMode</TT | |
196 ></A | |
197 >, | |
198 <A | |
199 HREF="sdlgetvideoinfo.html" | |
200 ><TT | |
201 CLASS="FUNCTION" | |
202 >SDL_GetVideoInfo</TT | |
203 ></A | |
204 ></P | |
205 ></DIV | |
206 ><DIV | |
207 CLASS="NAVFOOTER" | |
208 ><HR | |
209 ALIGN="LEFT" | |
210 WIDTH="100%"><TABLE | |
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211 SUMMARY="Footer navigation table" |
0 | 212 WIDTH="100%" |
213 BORDER="0" | |
214 CELLPADDING="0" | |
215 CELLSPACING="0" | |
216 ><TR | |
217 ><TD | |
218 WIDTH="33%" | |
219 ALIGN="left" | |
220 VALIGN="top" | |
221 ><A | |
222 HREF="sdllistmodes.html" | |
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223 ACCESSKEY="P" |
0 | 224 >Prev</A |
225 ></TD | |
226 ><TD | |
227 WIDTH="34%" | |
228 ALIGN="center" | |
229 VALIGN="top" | |
230 ><A | |
231 HREF="index.html" | |
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232 ACCESSKEY="H" |
0 | 233 >Home</A |
234 ></TD | |
235 ><TD | |
236 WIDTH="33%" | |
237 ALIGN="right" | |
238 VALIGN="top" | |
239 ><A | |
240 HREF="sdlsetvideomode.html" | |
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241 ACCESSKEY="N" |
0 | 242 >Next</A |
243 ></TD | |
244 ></TR | |
245 ><TR | |
246 ><TD | |
247 WIDTH="33%" | |
248 ALIGN="left" | |
249 VALIGN="top" | |
250 >SDL_ListModes</TD | |
251 ><TD | |
252 WIDTH="34%" | |
253 ALIGN="center" | |
254 VALIGN="top" | |
255 ><A | |
256 HREF="video.html" | |
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257 ACCESSKEY="U" |
0 | 258 >Up</A |
259 ></TD | |
260 ><TD | |
261 WIDTH="33%" | |
262 ALIGN="right" | |
263 VALIGN="top" | |
264 >SDL_SetVideoMode</TD | |
265 ></TR | |
266 ></TABLE | |
267 ></DIV | |
268 ></BODY | |
269 ></HTML | |
270 > |