Event reference
Understand behavior and characteristics of each event.
Read time 2 minutesLast updated a month ago
UI Toolkit raises an event when a user interacts with and changes the state of elements from UI Toolkit. The event design is similar to the Event interface for HTML elements.
Event types fit into a hierarchy based on the EventBase class. Each event family implements an interface that defines the common characteristics of all events of the same family. For example, and use the FocusEventBase class.
BlurEventFocusEventSelect any of the event types listed below for more information on the event, its parent class, and links to the API documentation.
Topic | Description |
|---|---|
| Capture events | Events that capture the user's interaction with the UI. |
| Change events | Events that occur when the user changes the state of an element. |
| Click events | Events that occur when the user clicks an element. |
| Command events | Events that occur when the user invokes a command. |
| Drag and drop events | Events that occur when the user drags and drops an element. |
| Layout events | Events that occur when the layout engine changes the layout of an element. |
| Focus events | Events that occur when the user focuses on an element. |
| Input events | Events that occur when the user inputs text. |
| Keyboard events | Events that occur when the user presses a key. |
| Mouse events | Events that occur when the user moves the mouse. |
| Navigation events | Events that occur when the user navigates through the UI. |
| Panel events | Events that occur when the user interacts with a panel. |
| Pointer events | Events that occur when the user interacts with a pointer device. |
| Tooltip events | Events that occur when the user interacts with a tooltip. |
| Transition events | Events that inform you of changes to the state of transition. |
| ContextualMenu events | Events that occur when the user interacts with a contextual menu. |
| IMGUI events | Events that occur when the user interacts with an IMGUI element. |