first-responder
Which NSTextView is the First Responder?
I\'m working on a Cocoa programming exercise, and I need to be able to determine whi开发者_StackOverflow社区ch of two NSTextView objects is currently being edited. I think it\'s something to do with f[详细]
2022-12-17 10:01 分类：问答Where do FirstResponder methods come from?
I\'m looking at IKImageDemo supplied by Apple, the rotate round-slider is linked to a setRotation: method in the FirstResponder. However, none of the objects in the project seem to HAVE such a method,[详细]
2022-12-17 07:52 分类：问答Change UITextField background when editing begins
I\'d like to change the background image of a UITextField when it becomes the firstResponder to show the user that it has focus, similar to the :active or :focus pseudo-classes in CSS.[详细]
2022-12-15 02:47 分类：问答How do I perform an action in response to an item being added to an NSArrayController's content?
I have an NSArrayController whose content is the \"servers\" property of my AppDelegate. I have an NS开发者_开发知识库TextField which is bound to the \"selection.name\" property of the NSArrayControl[详细]
2022-12-13 17:22 分类：问答Sending an event to an NSControl underneath another NSControl if it does not handle it
I have multiple superpo开发者_StackOverflow中文版sed controls which can handle a mouse click under certain conditions. What I want to be able to do is:[详细]
2022-12-08 15:31 分类：问答
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
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