Can WP7 Silver Light Gesture Listener added to StackPanel?
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I'm working on a small Windows Phone 7 Silver Light app. I simply want a context menu to pop up over an item in a Listbox when the user taps and holds on the respective entry. I've read through several posts and the most common answer given is to use the Silverlight toolkit. I was excited since I already have it set up and use it for a few other things in the app. So I found a tutorial that explains how to set it up on a button. It failed when I tried because I was setting the content for the button twice:

        <Button Width="Auto" MinWidth="460" Height="Auto" HorizontalAlignment="Stretch">
            <Button.Content>
                <toolkit:GestureListener Hold="GestureListener_Hold" />
                <StackPanel ..... >
                    .......
                </<StackPanel>
            </Button.Content>
        </Button>

Which tells me "The property 'Content' is et more than once.
So after searching again I found a nice article, http://forums.create.msdn.com/forums/t/85263.aspx, which shows that I can move the statement to look more like:

        <StackPanel Orientation.....>
            <toolkit:GestureListener Hold="GestureListener_Hold" />  
            <TextBlock
                Text="{Binding ItemName}" FontSize="{StaticResource PhoneFontSizeLarge}"
                HorizontalAlignment="Stretch" VerticalAlignment="Center" Height="40"/>
        </StackPanel>
        
Which tells me "A value of type 'GestureListener' cannot be added to a collection or dictionary of type 'UIElementCollection'.

I'd appreciate any help on either method or a brand new one. 
Thanks in advance!