DragEventHandler Delegate

Definition

Namespace:: Windows.UI.Xaml

Edit

Represents the method that will handle the DragEnter, DragLeave, DragOver, and Drop events of a UIElement.

Equivalent WinUI delegate: Microsoft.UI.Xaml.DragEventHandler.

public delegate void DragEventHandler(Platform::Object ^ sender, DragEventArgs ^ e);

/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.Guid(716284421, 7795, 19407, 170, 188, 87, 185, 126, 33, 150, 29)]
/// [Windows.Foundation.Metadata.WebHostHidden]
class DragEventHandler : MulticastDelegate

[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.Guid(716284421, 7795, 19407, 170, 188, 87, 185, 126, 33, 150, 29)]
[Windows.Foundation.Metadata.WebHostHidden]
public delegate void DragEventHandler(object sender, DragEventArgs e);

Public Delegate Sub DragEventHandler(sender As Object, e As DragEventArgs)

Parameters

sender: Object

The object where the event handler is attached.

e: DragEventArgs

The event data.

Inheritance: Delegate
DragEventHandler

Attributes: ContractVersionAttribute GuidAttribute WebHostHiddenAttribute

Windows 10 requirements

Device family	Windows 10 (introduced in 10.0.10240.0)
API contract	Windows.Foundation.UniversalApiContract (introduced in v1.0)

Remarks

DragEventHandler is the delegate you implement to handle these events:

UIElement.DragEnter
UIElement.DragLeave
UIElement.DragOver
UIElement.Drop These events are routed events. Changing the value of the Handled property of DragEventArgs from an event handler can influence how a routed event behaves. For more info on the routed event concept, see Events and routed events overview.

The Control class has pre-wired event handlers that Control derived types can override to provide class-based handling for the drag-drop events,. These methods are:

The Windows Runtime implementation of drag-drop concepts permits only certain controls and input actions to initiate a drag-drop action. There is no generalized DoDragDrop method that would permit any UI element to initiate a drag-drop action. The main source of a drag-drop action is when you drag the items of a list such as GridView.

Applies to