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Votes
3
Found in
2020.3.44f1
2021.3.18f1
2022.2.5f1
2023.1.0b2
Issue ID
UUM-26089
Regression
No
“RegisterCallback<KeyUpEvent>” and “RegisterCallback<KeyDownEvent>“ callbacks are not called when pressing keys in a UI Toolkit window
How to reproduce:
1. Open the user’s attached “TestJSONImport.zip” project
2. Open Menu > Test > KeyUpEventTest
3. Press the “Q”, “W”, “E”, “R”, “T”, or “Y” key
4. Observe the Console window
Expected result: Pressed key is printed
Actual result: Editor tools (Hand Tool, Move, Rotate) are selected and the pressed key is not printed
Reproducible with: 2020.3.44f1, 2021.3.18f1, 2022.2.5f1, 2023.1.0b2
Reproduced on: macOS 12.4 (Intel)
Note: If focusing on the “Text Field” Input Field and doing the 3rd and 4th steps the key is printed in the Console window
-
Dhaegon
Feb 10, 2023 03:53
This makes it really hard to create custom editors using UI Toolkit when I can't rely on key events to fire.
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Resolution Note:
By default a visual element doesn't receive keyboard events.
Only elements that are focusable and currently being focused will targeted for keyboard events (since keyboard events are trickling down and bubbling up so parent elements of the element can receive them too).
In short, marking the element "focusable=true" and giving it explicit focus with "element.Focus()" should be enough to start receiving keyboard events.
In the future we will improve this documentation page to mention this concept.
https://docs.unity3d.com/2022.2/Documentation/Manual/UIE-Keyboard-Events.html