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UIElement.DragStarting 事件

定義

發生于起始拖曳作業時。

// Register
event_token DragStarting(TypedEventHandler<UIElement, DragStartingEventArgs const&> const& handler) const;

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

// Revoke with event_revoker
UIElement::DragStarting_revoker DragStarting(auto_revoke_t, TypedEventHandler<UIElement, DragStartingEventArgs const&> const& handler) const;
public event TypedEventHandler<UIElement,DragStartingEventArgs> DragStarting;
function onDragStarting(eventArgs) { /* Your code */ }
uIElement.addEventListener("dragstarting", onDragStarting);
uIElement.removeEventListener("dragstarting", onDragStarting);
- or -
uIElement.ondragstarting = onDragStarting;
Public Custom Event DragStarting As TypedEventHandler(Of UIElement, DragStartingEventArgs) 
<uiElement DragStarting="eventhandler"/>

事件類型

備註

DragStarting 是路由事件。 如需路由事件概念的詳細資訊,請參閱 事件和路由事件概觀

適用於

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