DocumentGroup.MDIStyle Property

Gets or sets how the DocumentGroup presents its child panels, as floaing windows, or using the tabbed UI. This is a dependency property.

Namespace: DevExpress.Xpf.Docking

Assembly: DevExpress.Xpf.Docking.v19.1.dll

Declaration

C#

public MDIStyle MDIStyle { get; set; }

VB.NET

Public Property MDIStyle As MDIStyle

Property Value

Type	Description
MDIStyle	An MDIStyle value that specifies how the DocumentGroup presents its child panels, as floaing windows, or using the tabbed UI.

Available values:

Name	Description
Default	The same option as MDIStyle.Tabbed.
Tabbed	A DocumentGroup is rendered as a tab container, where children are represented as tabs.
MDI	A DocumentGroup’s children are represented as floating windows, that can float within the DocumentGroup’s boundaries.

Remarks

When the MDIStyle property is set to MDIStyle.MDI, child DocumentPanel objects are represented as floating windows. The DockLayoutManager.MDIController object provides methods to work with child panels in this mode. The state of each DocumentPanel can be specified via the DocumentPanel.MDIState property.

Tip

In MDI Mode, DocumentPanels can be moved within the boundaries of a parent group only. To move panels within the boundaries of a window or a desktop, use Float Groups.

Example

In this example, MDI mode is enabled for a DocumentGroup via the MDIStyle property. In this mode, the DocumentGroup’s panels are represented as floating windows.

The following image shows the result:

Note

A complete sample project is available at https://github.com/DevExpress-Examples/how-to-enable-mdi-mode-for-a-documentgroup-e2190.

MainWindow.xaml

<dxdo:DocumentGroup x:Name="documentGroup1" ItemWidth="2*" MDIStyle="MDI">
    <dxdo:DocumentPanel x:Name="document1" Caption="Document 1" MDISize="200,100" >
        <RichTextBox/>
    </dxdo:DocumentPanel>
    <dxdo:DocumentPanel x:Name="document2" Caption="Document 2" MDISize="200,100" MDILocation="50,120" >
        <RichTextBox/>
    </dxdo:DocumentPanel>
</dxdo:DocumentGroup>

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the MDIStyle property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

wpf-docklayoutmanager-load-an-external-window-or-usercontrol-into-a-documentpanel/CS/DocumentPanel_Content/MainWindow.xaml#L38

<dxdo:LayoutGroup>
    <dxdo:DocumentGroup x:Name="documentGroup1" SelectedTabIndex="1" DestroyOnClosingChildren="False" MDIStyle="MDI">
        <dxdo:DocumentPanel x:Name="docPanel1" Caption="Panel 1" MDISize="300,250"/>

how-to-create-a-bar-item-to-display-opened-documents-e4180/CS/OpenedWindows/MainWindow.xaml#L18

<dxb:BarManager.Items>
    <dxb:BarCheckItem x:Name="cbMDIStyle" IsChecked="{Binding MDIStyle, ElementName=documentGroup1, Converter={StaticResource MDIStyleConverter}}" Content="MDI Style" />
    <local:BarWindowsButtonItem x:Name="sbOpenedWindows" DockManager="{Binding ElementName=dockManager1}" />

how-to-create-a-modal-documentpanel-in-docklayoutmanager-t153405/CS/Example1/MainWindow.xaml#L9

<dxdo:LayoutGroup>
    <dxdo:DocumentGroup MDIStyle="MDI">
        <dxdo:DocumentPanel Caption="Document" MinWidth="150" MinHeight="50">

wpf-docklayoutmanager-merge-bars-in-controls-that-support-automatic-merging/CS/WpfApplication1/MainWindow.xaml#L21

<dxdo:LayoutGroup>
    <dxdo:DocumentGroup x:Name="ChildDocumentGroup" MDIStyle="Tabbed" DestroyOnClosingChildren="False">
        <dxdo:DocumentPanel x:Name="Document1" Caption="DocumentPanel1" MDISize="800,600">

wpf-docklayoutmanager-merge-ribbon-controls/CS/WpfApplication1/MainWindow.xaml#L40

<dxdo:LayoutGroup>
    <dxdo:DocumentGroup x:Name="ChildDocumentGroup" MDIStyle="Tabbed" DestroyOnClosingChildren="False">
        <dxdo:DocumentPanel x:Name="Document1" Caption="Document1" MDISize="800,600">