Display a Context Menu with Opacity
<Window x:Class="WpfApplication1.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="WPF" Height="100" Width="300"> <Grid> <TextBox FontSize="16" Height="23" Name="txtTextBox" > <TextBox.ContextMenu> <ContextMenu HasDropShadow="True" Opacity=".8"> <MenuItem Command="Cut" Header="Cu_t" /> <MenuItem Command="Copy" Header="_Copy" /> <MenuItem Command="Paste" Header="_Paste" /> <Separator/> <MenuItem Click="SelectAll_Click" Header="_Select All" /> <MenuItem Click="Clear_Click" Header="_Clear" /> <Separator/> <MenuItem Header="Format"> <MenuItem Click="TextStyle_Click" Header="_Normal" Name="miNormal"></MenuItem> <MenuItem Click="TextStyle_Click" FontWeight="Bold" Header="_Bold" Name="miBold"></MenuItem> <MenuItem Click="TextStyle_Click" FontStyle="Italic" Header="_Italic" Name="miItalic"></MenuItem> </MenuItem> </ContextMenu> </TextBox.ContextMenu> A TextBox control with ContextMenu. </TextBox> </Grid> </Window> //File:Window.xaml.vb Imports System.Windows Namespace WpfApplication1 Public Partial Class Window1 Inherits Window Public Sub New() InitializeComponent() End Sub Private Sub Clear_Click(sender As Object, e As RoutedEventArgs) txtTextBox.Clear() End Sub Private Sub SelectAll_Click(sender As Object, e As RoutedEventArgs) txtTextBox.SelectAll() End Sub Private Sub TextStyle_Click(sender As Object, e As RoutedEventArgs) If sender Is miNormal Then txtTextBox.FontWeight = FontWeights.Normal txtTextBox.FontStyle = FontStyles.Normal ElseIf sender Is miBold Then txtTextBox.FontWeight = FontWeights.Bold ElseIf sender Is miItalic Then txtTextBox.FontStyle = FontStyles.Italic End If End Sub End Class End Namespace