A DevExpress.UI.Xaml.Layout.Internal.HamburgerSubMenuMoreButtonVisibility enumeration value that specifies whether the More predefined button is displayed. The default is Auto.
The HamburgerSubMenu.Items property specifies the collection of sub-menu items. When an end-user clicks on a sub-menu, a fly-out panel containing sub-menu items appears. However, a particular sub-menu item can also be displayed directly in the main menu below the sub-menu button. To enable this behavior for a particular item, set its HamburgerSubMenuNavigationButton.ShowInPreview property to true.
It the figure below, the Inbox, Drafts and Sent items of the Folders sub-menu are shown in preview.
Below is a markup that corresponds the sub-menu in the figure.
By default, the MoreButtonVisibilityMode property is set to Auto. In this mode, the More predefined button is automatically displayed if not all items are shown in the preview. With a click on this button, a sub-menu fly-out panel that contain all sub-menu items opens.
Set this property to Hidden or Visible to explicitly specify the More button's visibility.
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