DragEventHandler Delegate

Reference

Definition

Namespace:: Windows.UI.Xaml

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Edit

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

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)]
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)]
public delegate void DragEventHandler(object sender, DragEventArgs e);

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

Parameters

sender: Object
Platform::Object

IInspectable

The object where the event handler is attached.

e: DragEventArgs

The event data.

Attributes: ContractVersionAttribute GuidAttribute

Windows 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