通过

RichEditBox.SelectionChanging 事件

  • 参考

定义

命名空间:
Windows.UI.Xaml.Controls
编辑

在文本选择开始更改时发生。

// Register
event_token SelectionChanging(TypedEventHandler<RichEditBox, RichEditBoxSelectionChangingEventArgs const&> const& handler) const;

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

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

事件类型

TypedEventHandler<RichEditBox,RichEditBoxSelectionChangingEventArgs>

Windows 要求

设备系列
Windows 10, version 1809 (在 10.0.17763.0 中引入)
API contract
Windows.Foundation.UniversalApiContract (在 v7.0 中引入)

适用于