Each panel has a focus ring that defines the focus order of elements. By default, a depth-first search (DFS) on the visual tree defines the focus order of elements. For example, the focus order for the tree depicted below is F, B, A, D, C, E, G, I, H.
Some events use the focus order to define which element holds the focus. For example, the target for a keyboard event is the element in focus.
使用 focusable
属性可控制元素的可聚焦性。默认情况下,VisualElements
无法聚焦,但是某些子类(例如 TextField
)默认可聚焦。
Use the tabIndex
property to control the focus order as follows (tabIndex
default value of 0):
tabIndex
为负,则无法用 Tab 键导航到该元素。tabIndex
为零,该元素保持默认的 Tab 顺序(通过焦点环算法确定的顺序)。tabIndex
为正,该元素将置于 tabIndex
为零 (tabIndex = 0
) 或 tabIndex
更小的其他元素之前。Did you find this page useful? Please give it a rating:
Thanks for rating this page!
What kind of problem would you like to report?
Thanks for letting us know! This page has been marked for review based on your feedback.
If you have time, you can provide more information to help us fix the problem faster.
Provide more information
You've told us this page needs code samples. If you'd like to help us further, you could provide a code sample, or tell us about what kind of code sample you'd like to see:
You've told us there are code samples on this page which don't work. If you know how to fix it, or have something better we could use instead, please let us know:
You've told us there is information missing from this page. Please tell us more about what's missing:
You've told us there is incorrect information on this page. If you know what we should change to make it correct, please tell us:
You've told us this page has unclear or confusing information. Please tell us more about what you found unclear or confusing, or let us know how we could make it clearer:
You've told us there is a spelling or grammar error on this page. Please tell us what's wrong:
You've told us this page has a problem. Please tell us more about what's wrong:
Thank you for helping to make the Unity documentation better!
Your feedback has been submitted as a ticket for our documentation team to review.
We are not able to reply to every ticket submitted.