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TextBox.SelectionChanging Evento

Definizione

Si verifica quando la selezione del testo inizia a cambiare.

// Register
event_token SelectionChanging(TypedEventHandler<TextBox, TextBoxSelectionChangingEventArgs const&> const& handler) const;

// Revoke with event_token
void SelectionChanging(event_token const* cookie) const;

// Revoke with event_revoker
TextBox::SelectionChanging_revoker SelectionChanging(auto_revoke_t, TypedEventHandler<TextBox, TextBoxSelectionChangingEventArgs const&> const& handler) const;
public event TypedEventHandler<TextBox,TextBoxSelectionChangingEventArgs> SelectionChanging;
function onSelectionChanging(eventArgs) { /* Your code */ }
textBox.addEventListener("selectionchanging", onSelectionChanging);
textBox.removeEventListener("selectionchanging", onSelectionChanging);
- or -
textBox.onselectionchanging = onSelectionChanging;
Public Custom Event SelectionChanging As TypedEventHandler(Of TextBox, TextBoxSelectionChangingEventArgs) 
<TextBox SelectionChanging="eventhandler"/>

Tipo evento

Requisiti Windows

Famiglia di dispositivi
Windows 10, version 1809 (è stato introdotto in 10.0.17763.0)
API contract
Windows.Foundation.UniversalApiContract (è stato introdotto in v7.0)

Si applica a

Vedi anche