> I think that System Preferences, since it's loading plug-ins, requires that > your classes have unique names. Otherwise, when it loads the plug-ins, the > names conflict in the Objective-C runtime. >
Thanks a lot!
I have found this error message in the syslog:
Class ArtSaverView is implemented in both /Users/zach/Library/Screen
Savers/Foo.saver/Contents/MacOS/Foo and /Users/zach/Library/Screen
Savers/Foo2.saver/Contents/MacOS/Foo2. One of the two will be used. Which one
is undefined.
That explains a lot.
I have changed my code -- the good news is that most of the time, it works now;
the bad news is that occasionally it does not work!
In the header file, I declare my class like this:
#ifdef SECOND_FOOSAVER_VIEW
#define FOOVIEW FooSaver2View
#else
#define FOOVIEW FooSaverView
#endif
@interface FOOVIEW : ScreenSaverView
{ ...
where SECOND_FOOSAVER_VIEW is declared in
Similarly, I refer only to FOOVIEW in FooView.m
In the initWithFrame method of FOOVIEW, I retrieve the bundle and plug-in name
like so:
NSBundle * bundle = [NSBundle bundleForClass:[self class]];
exec_name_ = [[bundle infoDictionary] objectForKey:@"CFBundleName"];
NSLog(@"execname = %@\n", exec_name_ );
Now, everything works fine *most of the time*: I can run SystemPreferences,
there is no more error message in syslog, I can select the different screen
savers, set different preferences, the screen savers store them in the correct
files, etc.
BUT occasionally, when I run SystemPreferences, both screen savers exhibit the
same behavior, i.e., they loaded the same preferences! This is also reflected
in the syslog, where both screen savers logged the same execname!
How can that happen?
Puzzled,
Gabriel.
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