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RichEditMenuCustomization Class

Allows you to specify bar actions for context menu customization.

Namespace: DevExpress.Xpf.RichEdit.Menu

Assembly: DevExpress.Xpf.RichEdit.v22.1.dll

Declaration

public class RichEditMenuCustomization :
    DependencyObject

Remarks

To modify the Rich Text Editor’s context menus, add the required bar actions to the RichEditMenuCustomization.Customizations collection. Use the RichEditMenuCustomization.MenuType property to specify the menu type you want to customize.

The example below demonstrates how to customize the Text context menu.

Custom context menu

View Example

<dx:ThemedWindow x:Class="WpfRichEditorMenuCustomization.MainWindow" mc:Ignorable="d" Title="Rich Text Editor" 
                 Height="450" Width="800"
    xmlns:dx="http://schemas.devexpress.com/winfx/2008/xaml/core"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:local="clr-namespace:WpfRichEditorMenuCustomization"
    xmlns:dxre="http://schemas.devexpress.com/winfx/2008/xaml/richedit" 
    xmlns:dxb="http://schemas.devexpress.com/winfx/2008/xaml/bars">
    <Grid>
        <dxre:RichEditControl Name="richTextEditor">
            <dxre:RichEditControl.MenuCustomizations>
                <dxre:RichEditMenuCustomization MenuType="Text">
                    <!--Add a separator after the first three menu items.-->
                    <dxb:InsertAction Index="4">
                        <dxb:BarItemSeparator />
                    </dxb:InsertAction>
                    <!--Insert a custom menu item to highlight selected text.-->
                    <dxb:InsertAction Index="5">
                        <dxb:BarButtonItem Content="Highlight Selection" 
                                           ItemClick="HighlightSelection_ItemClick" />
                    </dxb:InsertAction>
                    <!--Add a new item to the end of the context menu
                    and bind this item to the Rich Text Editor's command.-->
                    <dxb:BarButtonItem Command="{Binding RelativeSource={RelativeSource Self}, Mode=OneWay, 
                        Path=(dxre:RichEditControl.RichEdit).CommandProvider.InsertFloatingPicture}" 
                        Content="Insert Picture" />
                    <!--Change the "New Comment" item's content.-->
                    <dxb:UpdateAction ElementName="{x:Static dxre:DefaultBarItemNames.PopupMenuItem_NewComment}"
                                      PropertyName="Content"
                                      Value="Add Comment"/>
                    <!--Remove the "Increase Indent" item from the menu.-->
                    <dxb:RemoveAction ElementName="{x:Static dxre:DefaultBarItemNames.PopupMenuItem_IncreaseIndent}"/>
                    <!--Remove the "Decrease Indent" item from the menu.-->
                    <dxb:RemoveAction ElementName="{x:Static dxre:DefaultBarItemNames.PopupMenuItem_DecreaseIndent}"/>
                </dxre:RichEditMenuCustomization>
            </dxre:RichEditControl.MenuCustomizations>
        </dxre:RichEditControl>
    </Grid>
</dx:ThemedWindow>

Handle the Highlight Selection item’s ItemClick event to highlight selected text in yellow.

using DevExpress.XtraRichEdit.API.Native;
// ...

private void HighlightSelection_ItemClick(object sender, DevExpress.Xpf.Bars.ItemClickEventArgs e) {
    var selectedRanges = richTextEditor.Document.Selections;
    foreach (var range in selectedRanges) {
        var charProps = richTextEditor.Document.BeginUpdateCharacters(range);
        charProps.BackColor = System.Drawing.Color.Yellow;
        richTextEditor.Document.EndUpdateCharacters(charProps);
    }
}

Inheritance

See Also