问题描述
如何以编程方式更改公开三角形的方向？
在Interface Builder中，可以通过从从左到右或从右到左改变值Control - > Layout。
How can I change the direction of the disclosure triangle programmatically?In Interface Builder it's possible by changing the value "Control -> Layout" from "Left to Right" or "Right to Left".
diff的NIB文件。唯一的变化是 NSCellFlags2 。
I made a diff of a NIB file. The only change was NSCellFlags2.
这是记录在任何地方吗？
Is this documented anywhere?
推荐答案
您正在寻找的方法是 - [NSCell setUserInterfaceLayoutDirection：] 。您需要获取对相应单元格的引用，然后向其发送相应的消息。例如，考虑 disclosureButton 指向该公开按钮：
The method you’re looking for is -[NSCell setUserInterfaceLayoutDirection:]. You need to obtain a reference to the corresponding cell and then send it the appropriate message. For example, considering disclosureButton points to that disclosure button:
[[disclosureButton cell] setUserInterfaceLayoutDirection:NSUserInterfaceLayoutDirectionRightToLeft];
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