Mac OS X showWindow问题：NSWindow只出现一次
我有一个仅在状态栏中可见的 Mac OS X 程序，该程序必须显示首选项窗口。 我有这个 IBAction:
- (IBAction)showPreferences:(id)sender {
[self.preferencesWindowController showWindow:self];
[[NSApplication sharedApplication] activateIgnoringOtherApps:YES];
}
在 applicationDidFinish Lauching 中我有：
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
// Load the app's preferences window (but does not display it)
self.preferencesWindowController = [[PreferencesWindowController alloc] initWithWindowNibName:@"PreferencesWindowController"];
[...]
}
类头：
#import <Cocoa/Cocoa.h>
#import "AppPref.h"
@interface PreferencesWindowController : NSWindowController {
}
@end
问题是：首选项窗口仅显示一次。当我关闭它时，它就不会再出现了。
可能是什么问题？
I have a Mac OS X program visible only in status bar that must show a preferences window.
I have this IBAction:
- (IBAction)showPreferences:(id)sender {
[self.preferencesWindowController showWindow:self];
[[NSApplication sharedApplication] activateIgnoringOtherApps:YES];
}
In applicationDidFinish Lauching I have:
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
// Load the app's preferences window (but does not display it)
self.preferencesWindowController = [[PreferencesWindowController alloc] initWithWindowNibName:@"PreferencesWindowController"];
[...]
}
The class header:
#import <Cocoa/Cocoa.h>
#import "AppPref.h"
@interface PreferencesWindowController : NSWindowController {
}
@end
The problem is: the preference window shows up only once. When I close it, it will never reappear anymore.
What may be the problem?
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评论（1）
您必须更改窗口属性，以便它在关闭时不会被破坏。您可以在 Interface Builder 中执行此操作。
作为替代方案，我建议从
-showPreferences:方法加载笔尖。在-applicationDidFinishLaunching:方法中加载 nib 会减慢应用程序的启动时间，对用户或代码没有任何好处。You have to change the window properties so that it is not destroyed when it is closed. You can do this in Interface Builder.
As an alternative, I recommend loading the nib from the
-showPreferences:method. Loading the nib in the-applicationDidFinishLaunching:method will slow down your application launch time with no benefit to the user or your code.