Package com.smartgwt.client.widgets.events

# Interface DragStartHandler

All Superinterfaces:
  `EventHandler`

public interface DragStartHandler extends EventHandler

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `onDragStart(DragStartEvent event)`
  Executed when dragging first starts.

- ## Method Details

  - ### onDragStart

    void onDragStart(DragStartEvent event)
    Executed when dragging first starts. Your widget can use this opportunity to set things up for the drag, such as setting the drag tracker. Returning false from this event handler will cancel the drag action entirely.

    A drag action is considered to be begin when the mouse has moved `dragStartDistance` with the left mouse down.

    Parameters:
      `event` - the event