objective-c - comboBoxWillDismiss event not fired when changing NSComboBox

Question

I have an NSComboBox defined in Interface Builder, and the -(void)comboBoxWillDismiss:(NSNotification *)notification function in my .m file.
However, when changing the content of the NSComboBox (internal cells, not data source), the comboBoxWillDismiss does not get fired.
What did I forget to do?

Answer 1

コメントの推奨に従って機能しました: [myCombo setDelegate:self]。