DiagramControl.CustomItemGiveFeedback Event

Occurs while diagram items are dragged.

Namespace: DevExpress.Xpf.Diagram

Assembly: DevExpress.Xpf.Diagram.v21.2.dll

Declaration

public event EventHandler<DiagramCustomItemGiveFeedbackEventArgs> CustomItemGiveFeedback

Event Data

The CustomItemGiveFeedback event's data class is DiagramCustomItemGiveFeedbackEventArgs. The following properties provide information specific to this event:

Property Description
Cursor Gets or sets the cursor type used during the drag-and-drop operation.
Effects Gets a value that indicates the effects of the drag-and-drop operation.
Handled Gets or sets a value that indicates the present state of the event handling for a routed event as it travels the route. Inherited from RoutedEventArgs.
Items Returns the list of items that are objects of the drag-and-drop operation.
OriginalSource Gets the original reporting source as determined by pure hit testing, before any possible Source adjustment by a parent class. Inherited from RoutedEventArgs.
RoutedEvent Gets or sets the RoutedEvent associated with this RoutedEventArgs instance. Inherited from RoutedEventArgs.
Source Gets or sets a reference to the object that raised the event. Inherited from RoutedEventArgs.

The event data class exposes the following methods:

Method Description
InvokeEventHandler(Delegate, Object) When overridden in a derived class, provides a way to invoke event handlers in a type-specific way, which can increase efficiency over the base implementation. Inherited from RoutedEventArgs.
OnSetSource(Object) When overridden in a derived class, provides a notification callback entry point whenever the value of the Source property of an instance changes. Inherited from RoutedEventArgs.

Remarks

Handle the CustomItemGiveFeedback event to modify the appearance of the mouse pointer during the drag operation. See the example below.

void diagram_CustomItemGiveFeedback(object sender, DiagramCustomItemGiveFeedbackEventArgs e)
{
    e.Cursor = DragDropCursor.Custom;
    Mouse.SetCursor(Cursors.No);
}
See Also