cocoa - NSStatusItem "kCG..."错误

Question

出于某种原因，在控制台中我得到

: kCGErrorIllegalArgument: CGSUnregisterWindowWithSystemStatusBar: Invalid window

: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged.

使用(我认为)这段代码...

- (void)applicationDidResignActive:(NSNotification*)aNotification
{
        statusItem = [[NSStatusBar systemStatusBar] 
                       statusItemWithLength:NSVariableStatusItemLength];
        [statusItem setHighlightMode:YES];
        [statusItem setEnabled:YES];

            //Set menubar item's tooltip
        [statusItem setToolTip:@"Nucleus"];
        [statusItem setMenu:theMenu];
            //Set the menubar item's title
        [statusItem setTitle:[NSString stringWithString:@"N"]];

    [statusItem retain];

}

- (void)applicationDidBecomeActive:(NSNotification*)aNotification
{
    [[NSStatusBar systemStatusBar] removeStatusItem:statusItem];
}

我相信这是堆栈跟踪(？):

0x00007fff8667349b <+0000>推送%rbp
0x00007fff8667349c <+0001> mov %rsp,%rbp
0x00007fff8667349f <+0004> mov %edi,%eax
0x00007fff866734a1 <+0006> 离开q
0x00007fff866734a2 <+0007> retq
0x00007fff866734a3 <+0008> nop

为什么？我该如何解决这个问题？

我在 Mac 上使用 Cocoa？

Answer 1

我不确定是什么导致了错误，但我确实注意到每次应用程序停用时都会泄漏 statusItem。也许在从状态栏中删除[statusItem release]后添加它会有所帮助(它肯定会修复您的泄漏)。