用户关闭窗口时识别(单击关闭按钮时)

Question

用户关闭窗口时如何识别？

我想在窗口关闭前做点什么.

Answer 1

我在viewcontroller中使用它

//initWithNibName

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(windowWillClose:) name:NSWindowWillCloseNotification object:self.view.window];

- (void)windowWillClose:(NSNotification *)notification
    {
        NSWindow *win = [notification object];
        //...
    }