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MDIMergeStyle Enum

wpf-devexpress-dot-xpf-dot-bars-ef42c349.md

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MDIMergeStyle Enum

Provides members used to specify what child DocumentPanels invoke the merging/unmerging mechanism.

Namespace : DevExpress.Xpf.Bars

Assembly : DevExpress.Xpf.Core.v25.2.dll

NuGet Package : DevExpress.Wpf.Core

Declaration

csharp
public enum MDIMergeStyle
vb
Public Enum MDIMergeStyle

Members

NameDescription
Default

Identical to the MDIMergeStyle.Always value.

| | WhenChildActivated |

Bars/ribbons are merged in the following cases:

  • When you activate a maximized MDI child panel ( MDI UI ).
  • When you select a tab ( tabbed UI ).

Bars/ribbons are unmerged in the following cases:

  • When you restore a maximized MDI child panel from the maximized to the normal state or deactivate it ( MDI UI ).
  • When you deactivate a selected tab or select another tab ( tabbed UI ).

| | Always |

The panel’s bar/ribbon is merged with the parent bar/ribbon in the following cases:

  • When you maximize a DocumentGroup‘s MDI child panel ( MDI UI ).
  • When you select the DocumentGroup‘s panel in the tab ( tabbed UI ).

If your layout contains multiple DocumentGroups, the merging mechanism is invoked for all DocumentGroups simultaneously. In this case, all of them are merged to the parent at the same time.

Bars/ribbons are unmerged in the following cases:

  • When you restore an MDI child panel from the maximized state to the normal state ( MDI UI ).
  • When you select another tab (Tabbed UI).

| | Never |

Prevents all child tabbed and MDI panels from being merged.

| | WhenLoadedOrChildActivated |

Similar to WhenChildActivated mode, but additionally merges MDI panels and tabs that are initially maximized (docked), but not yet selected (for example, on application start).

|

The following properties accept/return MDIMergeStyle values:

Remarks

MDIMergeStyle enumerator values are used to set the DockLayoutManager.MDIMergeStyle, DocumentPanel.MDIMergeStyle, BarManager.MDIMergeStyle, RibbonControl.MDIMergeStyle and RibbonStatusBarControl.MDIMergeStyle properties.

See the MDI Bar Merging and MDI Ribbon Merging topics to learn more.

See Also

DevExpress.Xpf.Bars Namespace