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1210
Change ContentPane BorderThickness when it's floating
posted

I have a ContentPane which I set the BorderThickness to 0 for because of the styling (the border in the middle of whitespace looks bad).  However, when the pane is in a floating window (undocked), I would like the border back so you can see the edge over the rest of the app.  I thought to make a style trigger, but I can't find an appropriate property to use.

Is there a way I can make this happen?

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  • 1210
    Verified Answer
    Offline posted

    I was able to achieve what I wanted with this behavior:

    internal class PaneToolWindowBorderBehavior : Behavior<ContentPane>
    {
    #region Event Handlers
    protected override void OnAttached ()
    {
    base.OnAttached();

    base.AssociatedObject.MouseEnter += MouseEnter;
    base.AssociatedObject.DragEnter += MouseEnter;
    }

    protected override void OnDetaching ()
    {
    base.OnDetaching();

    base.AssociatedObject.MouseEnter -= MouseEnter;
    base.AssociatedObject.DragEnter -= MouseEnter;
    }

    private void MouseEnter (object sender, RoutedEventArgs e)
    {
    if (!(Utilities.GetAncestorFromType(base.AssociatedObject as DependencyObject, typeof(PaneToolWindow), true) is null))
    {
    base.AssociatedObject.BorderThickness = new Thickness(1.0);
    }
    else
    {
    base.AssociatedObject.BorderThickness = new Thickness(0.0);
    }
    }
    #endregion
    }

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