如何add/remove NSMenuItem下的子菜单项

Question

如何在运行时动态地add/remove一个Sub MenuItem下的NSMenuItem？

Answer 1

我找到了解决方案。

NSMenu  *mainMenu = [[NSApplication sharedApplication] mainMenu];
NSMenu  *appMenu = [[mainMenu itemAtIndex:5] submenu];

NSMenuItem *item=[[NSMenuItem alloc]initWithTitle:@"Tutorial" action:@selector(actionTutorial:) keyEquivalent:@"T"];

[item setTarget:self];
[item setTag:0];


[appMenu addItem:item];
[appMenu removeItemAtIndex:2]; // which is the index of above added item.