NSPopUpButton类型为Pull Down，当我单击某些菜单项时，弹出窗口的标题未更改 [英] NSPopUpButton of type pull Down , when i click on some menu item ,title of popup is not getting changed

问题描述

问题:

1. 采用类型为Pull down的NSPopupButton的实例.

在弹出菜单中添加一些菜单项.

Add few menu items to the pop up.

运行代码.

在弹出窗口中选择任何菜单项

Select any menu item in the popup

• 弹出按钮的标题未更改.
• 我需要将所选项目显示为Popup的标题，与NSPopupButton的正常行为相同，但类型为下拉.
• 还需要添加与标题相同的名称.

• Title of popup button is not getting changed.
• I need to show the selected item as title of Popup same as Normal behaviour of NSPopupButton but with the type pull down.
• Also Need to add an item as same name as title.

有人可以帮助我实现这一目标吗?

Can anybody help me to achieve this?

推荐答案

来自

与弹出列表不同，显示下拉列表的弹出按钮的标题不是基于当前选定的项，因此除非您使用单元格的setTitle:方法进行更改，否则其将保持固定.

Unlike popup lists, the title of a popup button displaying a pulldown list is not based on the currently selected item and thus remains fixed unless you change using the cell’s setTitle: method.

如果希望将所选项目显示为标题，最简单的方法是使用弹出窗口而不是下拉菜单.或每次更改选择时呼叫setTitle:.

If you want the selected item to be shown as title, the easiest way is to use a popup instead of pulldown. Or call setTitle: every time you change the selection.

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