Thumb.DragStarted Event


Occurs when a Thumb control receives logical focus and mouse capture.

 event System::Windows::Controls::Primitives::DragStartedEventHandler ^ DragStarted;
public event System.Windows.Controls.Primitives.DragStartedEventHandler DragStarted;
member this.DragStarted : System.Windows.Controls.Primitives.DragStartedEventHandler 
Public Custom Event DragStarted As DragStartedEventHandler 

Event Type



The following example shows how to assign an event handler for the DragStarted event to a Thumb control, and how to define the event handler. For the complete sample, see Thumb Drag Functionality Sample.

<Thumb Name="myThumb" Canvas.Left="80" Canvas.Top="80" Background="Blue" 
      Width="20" Height="20" DragDelta="onDragDelta" 
      DragStarted="onDragStarted" DragCompleted="onDragCompleted"
void onDragStarted(object sender, DragStartedEventArgs e)
    myThumb.Background = Brushes.Orange;
Private Sub onDragStarted(ByVal sender As Object, ByVal e As DragStartedEventArgs)
    myThumb.Background = Brushes.Orange
End Sub


The Thumb control receives focus and mouse capture when the user presses the left mouse button while pausing the mouse pointer over the Thumb.

Routed Event Information

Identifier field DragStartedEvent
Routing strategy Bubbling
Delegate DragStartedEventHandler

Applies to

See also