TextBox.SelectionChanging 事件

  • 参考

定义

命名空间:
Microsoft.UI.Xaml.Controls
编辑

在文本选择开始更改时发生。

// 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"/>

事件类型

TypedEventHandler<TextBox,TextBoxSelectionChangingEventArgs>

适用于

另请参阅