com.smartgwt.client.widgets.calendar.events

## Interface HasBackgroundMouseDownHandlers

- All Superinterfaces:
    com.google.gwt.event.shared.HasHandlers
  All Known Implementing Classes:
    Calendar, Timeline

      public interface HasBackgroundMouseDownHandlers
      extends com.google.gwt.event.shared.HasHandlers

- - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `com.google.gwt.event.shared.HandlerRegistration` | `addBackgroundMouseDownHandler(BackgroundMouseDownHandler handler)` Callback fired when the mouse button is depressed over a background-cell, ie, one without an event.

    - ### Methods inherited from interface com.google.gwt.event.shared.HasHandlers

      `fireEvent`

- - ### Method Detail

    - #### addBackgroundMouseDownHandler

          com.google.gwt.event.shared.HandlerRegistration addBackgroundMouseDownHandler(BackgroundMouseDownHandler handler)

      Callback fired when the mouse button is depressed over a background-cell, ie, one without an event. Call `BackgroundMouseDownEvent.cancel()` from within `BackgroundMouseDownHandler.onBackgroundMouseDown(com.smartgwt.client.widgets.calendar.events.BackgroundMouseDownEvent)` to cancel the default behavior of allowing sweep selection via dragging.
      Parameters:
        `handler` - the backgroundMouseDown handler
      Returns:
        `HandlerRegistration` used to remove this handler