USS Variables are regular USS style properties with custom user-defined names that can hold any style value type. They can then be used in place of a value on any other USS style property. USS variables are primarily used for themes, with the default Unity themes exposing a long list of standard variables to make your UI more consistent with standard controls. The example below demonstrates variable definition and usage in USS:
* {
--my-var: 20px;
}
.my-button {
width: var(--my-var);
}
To assign a variable to a StyleSheet USS style property in UI Builder:
This option will temporarily convert the style field into a text field and allow you to input the name of the USS variable:
As you type the name of the variable, a dropdown menu displays any found matching variables coming from either:
The variable dropdown will also let you select a variable option and see its current value and the StyleSheet asset it’s coming from. Pressing Enter will set the variable and revert the style field back to its original type.
For style fields that are already text fields, you can also assign a variable by starting to type --
instead of a number.
どのスタイルフィールドにすでに変数が割り当てられているかは、フィールドのラベルを見て、それがボックスで囲まれているかどうかでわかります。
To remove a variable assignment, select Set Variable and delete the variable name.
A few additional points to keep in mind when using USS Variables in UI Builder:
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.