Module kas::event

Event handling

Event handling uses event messages, passed from the parent into a widget, with responses passed back to the parent. This model is simpler than that commonly used by GUI frameworks: widgets do not need a pointer to their parent and any result is pushed back up the call stack. The model allows type-safety while allowing user-defined result types.

Structs

NoResponse

No message

Enums

Action	Input actions: these are high-level messages aimed at specific widgets.
GuiResponse	General GUI event responses

Traits

Handler

Event-handling aspect of a widget.

Functions

err_num	Notify of an incorrect widget number.
err_unhandled	Mark explicitly ignored events.