onRender
fun onRender(connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: (<Error class: unknown class>) -> Boolean): <Error class: unknown class>
Emitted when part of the surface needs to be redrawn.
Parameters
connectFlags
a combination of ConnectFlags
handler
the Callback to connect. Params: region the region that needs to be redrawn. Returns true to indicate that the signal has been handled