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2010-07-10T04:20:32.100
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<p>You can add an additional data trigger to examine the ContextMenu's IsOpen property through binding.</p> <pre><code><DataTrigger Binding="{Binding RelativeSource={RelativeSource Self}, Path=ContextMenu.IsOpen}" Value="True"> <Setter TargetName="NavLinkBorder" Property="Background" Value="#CCCCCC" /> <Setter Property="Cursor" Value="Hand" /> </DataTrigger> </code></pre> <p>You can also get rid of the MouseOver="false" trigger and just set Background="#EAEAEA" on NavLinkBorder as the default value which will take over when no triggers are active.</p> <p>Alternately, you can switch the border color setting to use template binding, which would help your code method to work. This is a good practice to use anyway as it makes your templates more flexible since different Background values can be set on individual Label instances. Here's the Style with some TemplateBindings and the context menu trigger added.</p> <pre><code><Style TargetType="{x:Type Label}" x:Key="NavLink"> <Setter Property="Background" Value="#EAEAEA" /> <Setter Property="Template"> <Setter.Value> <ControlTemplate x:Name="NavLinkControlTemplate" TargetType="{x:Type Label}"> <Border x:Name="NavLinkBorder" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}"> <ContentPresenter x:Name="NavLinkContent" Margin="4,4,4,4" /> </Border> <ControlTemplate.Triggers> <Trigger Property="IsMouseOver" Value="True"> <Setter TargetName="NavLinkBorder" Property="Background" Value="#CCCCCC" /> <Setter Property="Cursor" Value="Hand" /> </Trigger> <DataTrigger Binding="{Binding RelativeSource={RelativeSource Self}, Path=ContextMenu.IsOpen}" Value="True"> <Setter TargetName="NavLinkBorder" Property="Background" Value="#CCCCCC" /> <Setter Property="Cursor" Value="Hand" /> </DataTrigger> </ControlTemplate.Triggers> </ControlTemplate> </Setter.Value> </Setter> </Style> </code></pre>
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1. POWPF: Accessing Elements within a ContentPresenter?
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1. USJohn Bowen
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1. COJohn, thank you VERY much! The background color stays now; however, there is still one small bug. Since all my labels share the same context menu, when it opens the background color changes on ALL the labels instead of just the one I clicked. Is there a way to identify just the source element, or should I just create individual context menus for each label?
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2. CONevermind, John, I was able to get accomplish this using code to determine when the context menu was opened and closed and changing the background of the sender, just as you stated! Thank you very much!
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