Lesson 2 - Customize the Integrated Ribbon UI

1. Create a new WPF Application project and open the MainWindow.xaml file in the Visual Studio Designer.

2. Add the RichEditControl object to your project. You can do this by dragging the RichEditControl item from the DX.19.2: Rich Text Editor Toolbox tab to the canvas.

   

3. Right-click the RichEditControl object and select Layout | Reset All in the context menu. This stretches the RichEditControl to fill the entire window.

   As a result, you have a ready-to-use rich edit application with the integrated ribbon containing all available ribbon pages.

   Tip

   The RichEditControl comes complete with a ribbon which uses SVG icons by default. Set the ApplicationThemeHelper.UseDefaultSvgImages property to false before the Ribbon is initialized to switch to the bitmap icons.

Add the following XML namespace attributes to the MainWindow.xaml document:

xmlns:dx="http://schemas.devexpress.com/winfx/2008/xaml/core" 
xmlns:dxr="http://schemas.devexpress.com/winfx/2008/xaml/ribbon" 
xmlns:dxb="http://schemas.devexpress.com/winfx/2008/xaml/bars" 

Add the required customization actions to the RichEditControl.RibbonActions collection. The action's ElementName property specifies the name of the existing ribbon element you wish to change or remove. Element names are fields of the DevExpress.Xpf.RichEdit.DefaultBarItemNames class. You can easily deduce the required element name by following naming rules listed in the table below:

Ribbon Element	Element Type	Page Name	Group Name	Item Name	DefaultBarItemNames Field
Ribbon<br>	Ribbon Control				RibbonControl
Page/Tab<br>	Ribbon Page	Home			RibbonPage_Home
Contextual Tab<br>	Ribbon Category	Table Tools			RibbonCategory_TableTools
Group<br>	RibbonGroup	Home	Clipboard		RibbonGroup_Home_Clipboard
Item<br>	RibbonItem	File	Info	Document Properties	RibbonItem_File_Info_DocumentProperties

You can perform one of the following actions:

• Remove a Ribbon Element

• Modify a Ribbon Element

• Add a New Ribbon Element

Remove a Ribbon Element

To remove an element from a Ribbon, add a RemoveAction with a specified element name to the RichEditControl.RibbonActions collection.

The action in XAML looks as follows:

<dxb:RemoveAction ElementName="{x:Static dxre:DefaultBarItemNames.RibbonItem_File_Info_DocumentProperties}"/>

Modify a Ribbon Element

To change an item's property, add an UpdateAction, specifying the element's name (the name is determined as explained previously), the property and a new value, to the RichEditControl.RibbonActions collection. The XAML that selects the View page looks as follows:

<dxb:UpdateAction ElementName="{x:Static dxre:DefaultBarItemNames.RibbonPage_View}" PropertyName="IsSelected"  Value="True"/>

Add a New Ribbon Element

To add a new element, add an InsertAction to the RichEditControl.RibbonActions collection. The code below adds a new group "Demo" which contains a button "About" to the "View" ribbon page, assigns an image to it and subscribes to the button's ItemClick event.

<dxb:InsertAction Index="2" ContainerName="{x:Static dxre:DefaultBarItemNames.RibbonPage_View}">
    <dxr:RibbonPageGroup Caption="Demo">
        <dxb:BarButtonItem Content="About" 
                            LargeGlyph="{dx:DXImageOffice2013 Image=Info_32x32.png}" 
                            ItemClick="About_ItemClick"/>
    </dxr:RibbonPageGroup>
</dxb:InsertAction>