PrefPane subclass error
PrefPane subclass error
- Subject: PrefPane subclass error
- From: Jaime Magiera <email@hidden>
- Date: Mon, 12 Mar 2007 17:21:33 -0400
Hello,
I'm in the process of writing my first preference pane. I've used
instructions from http://www.macdevcenter.com/pub/a/mac/2006/01/27/
preferences.html and the PreferencePane .pdf from Apple. The pref
pane title and icon show up in toolbar of my application. However,
when the app launches or when I select the preference from the
toolbar (in both cases calling load), I get the error...
2007-03-12 17:02:05.408 MyApp[9071] /Users/jaimelm/myapp/build/
Release/MyApp.app/Contents/PreferencePanes/ExportPrefs.prefPane not
loaded as pref pane: principal class not a subclass of NSPreferencePane
This is really odd because the nib has the custom owner class set to
exportPreferencePaneController, which is a subclass of
NSPreferencePane...
==========
#import <Cocoa/Cocoa.h>
#import <PreferencePanes/NSPreferencePane.h>
@interface exportPreferencePaneController : NSPreferencePane {
}
@end
===========
I believe the plist sets the Principal Class correctly...
==============================
[annastasia:myapp/preferencePanes/exportPrefs] jaimelm% cat
ExportPreferences-Info.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://
www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleDevelopmentRegion</key>
<string>English</string>
<key>CFBundleExecutable</key>
<string>ExportPreferences</string>
<key>CFBundleIconFile</key>
<string>pref-advanced</string>
<key>CFBundleIdentifier</key>
<string>com.mycompany.myapp.ExportPreferences</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundlePackageType</key>
<string>BNDL</string>
<key>CFBundleSignature</key>
<string>SRN</string>
<key>CFBundleVersion</key>
<string>105</string>
<key>NSMainNibFile</key>
<string>exportPrefs</string>
<key>NSPrincipalClass</key>
<string>exportPreferencePaneController</string>
<key>iconPath</key>
<string>pref-advanced.png</string>
<key>paneName</key>
<string>ExportSettings</string>
<key>toolTip</key>
<string>Export Preferences</string>
</dict>
</plist>
===========================================
The mechanism in general works. There are other PrefPanes created by
a previous developer that load fine. Any thoughts on how to debug
this particular pane further, or does anything stand out that I might
have done wrong?
thanks,
Jaime Magiera
Sensory Research Network
http://www.sensoryresearch.net
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