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1850965
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2009-12-05T02:45:48.653
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2009-12-05T02:45:48.653
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<p>Here's how I made a ViewModel for a menu item: <a href="http://svn.soapboxcore.com/svn/trunk/SoapBox/SoapBox.Core/SoapBox.Core.Contracts/Gui/MenuItem/AbstractMenuItem.cs" rel="nofollow noreferrer">AbstractMenuItem</a>. Pay particular attention to the Icon region:</p> <pre><code> #region " Icon " /// <summary> /// Optional icon that can be displayed in the menu item. /// </summary> public object Icon { get { if (IconFull != null) { System.Windows.Controls.Image img = new System.Windows.Controls.Image(); if (EnableCondition.Condition) { img.Source = IconFull; } else { img.Source = IconGray; } return img; } else { return null; } } } private BitmapSource IconFull { get { return m_IconFull; } set { if (m_IconFull != value) { m_IconFull = value; if (m_IconFull != null) { IconGray = ConvertFullToGray(m_IconFull); } else { IconGray = null; } NotifyPropertyChanged(m_IconArgs); } } } private BitmapSource m_IconFull = null; static readonly PropertyChangedEventArgs m_IconArgs = NotifyPropertyChangedHelper.CreateArgs<AbstractMenuItem>(o => o.Icon); private BitmapSource IconGray { get; set; } private BitmapSource ConvertFullToGray(BitmapSource full) { FormatConvertedBitmap gray = new FormatConvertedBitmap(); gray.BeginInit(); gray.Source = full; gray.DestinationFormat = PixelFormats.Gray32Float; gray.EndInit(); return gray; } /// <summary> /// This is a helper function so you can assign the Icon directly /// from a Bitmap, such as one from a resources file. /// </summary> /// <param name="value"></param> protected void SetIconFromBitmap(System.Drawing.Bitmap value) { BitmapSource b = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap( value.GetHbitmap(), IntPtr.Zero, Int32Rect.Empty, System.Windows.Media.Imaging.BitmapSizeOptions.FromEmptyOptions()); IconFull = b; } #endregion </code></pre> <p>You just derive from this class and in the constructor you call SetIconFromBitmap and pass in a picture from your resx file.</p> <p>Here's how I bound to those IMenuItems in the <a href="http://svn.soapboxcore.com/svn/trunk/SoapBox/SoapBox.Core/SoapBox.Core.Workbench/Workbench/WorkBenchView.xaml" rel="nofollow noreferrer">Workbench Window</a>:</p> <pre><code> <Menu DockPanel.Dock="Top" ItemsSource="{Binding Path=(local:Workbench.MainMenu)}"> <Menu.ItemContainerStyle> <Style> <Setter Property="MenuItem.Header" Value="{Binding Path=(contracts:IMenuItem.Header)}"/> <Setter Property="MenuItem.ItemsSource" Value="{Binding Path=(contracts:IMenuItem.Items)}"/> <Setter Property="MenuItem.Icon" Value="{Binding Path=(contracts:IMenuItem.Icon)}"/> <Setter Property="MenuItem.IsCheckable" Value="{Binding Path=(contracts:IMenuItem.IsCheckable)}"/> <Setter Property="MenuItem.IsChecked" Value="{Binding Path=(contracts:IMenuItem.IsChecked)}"/> <Setter Property="MenuItem.Command" Value="{Binding}"/> <Setter Property="MenuItem.Visibility" Value="{Binding Path=(contracts:IControl.Visible), Converter={StaticResource BooleanToVisibilityConverter}}"/> <Setter Property="MenuItem.ToolTip" Value="{Binding Path=(contracts:IControl.ToolTip)}"/> <Style.Triggers> <DataTrigger Binding="{Binding Path=(contracts:IMenuItem.IsSeparator)}" Value="true"> <Setter Property="MenuItem.Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type MenuItem}"> <Separator Style="{DynamicResource {x:Static MenuItem.SeparatorStyleKey}}"/> </ControlTemplate> </Setter.Value> </Setter> </DataTrigger> </Style.Triggers> </Style> </Menu.ItemContainerStyle> </Menu> </code></pre>
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1. POHow do I set MenuItem's Icon using ItemContainerStyle
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1. PTAnswer
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1. USScott Whitlock
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