在mac状态栏上显示应用程序图标，代码

    NSStatusItem *statusItem;

    statusItem = [[NSStatusBar systemStatusBar] statusItemWithLength:NSVariableStatusItemLength];

    //[statusItem setTitle:@"⋯⋯Loading DynamicLyrics⋯⋯Waiting for iTunes⋯⋯"];

    NSImage *image = [NSImage imageNamed:@"ico.icns"];

    [statusItem setImage:image];

    [statusItem setHighlightMode:YES];

    //[statusItem setMenu:Menu];

    [statusItem setAction:@selector(onstatusItemClicked:)];

    [statusItem setTarget:self];