WPF MouseOver Adorner with some delay
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I have columnHeader and when i do mouse over I display one adorner by calling ShowAdorner command. Here I want to set 0.7 sec delay before adorner pops up. How to set delay before it calls ShowAdornerCommand. And if use already mouse leave before adorner pops up then I also need to cancel ShowAdornerCommand.

Link for Image: http://social.msdn.microsoft.com/Forums/en-US/wpf/thread/0e970e48-f0da-4ff2-b9f9-9d6df764f29d

Right now it does not have any delay. it pops up immediately.
Here is code:

    <ControlTemplate x:Key="ColumnHeaderControlTemplate" TargetType="{x:Type DataGridColumnHeader}" >
        <AdornerDecorator>
            <ad:Interaction.Behaviors>
                <GridColumnHeaderControl:GridAdornerBehavior AdornerTemplate="{StaticResource AdornerDataTemplate}" DataContextType="{x:Type ctrls:RhinoDataGrid}">
                    <ad:Interaction.Triggers>
                        <ad:EventTrigger SourceName="dgColumnHeader" EventName="MouseEnter">
                            <ad:InvokeCommandAction CommandName="ShowAdornerCommand"/>
                        </ad:EventTrigger>
                        <ad:EventTrigger SourceName="dgColumnHeader" EventName="MouseLeave">
                            <ad:InvokeCommandAction CommandName="HideAdornerCommand"/>
                        </ad:EventTrigger>
                    </ad:Interaction.Triggers>
                </GridColumnHeaderControl:GridAdornerBehavior>
            </ad:Interaction.Behaviors>
             <Grid Background="{TemplateBinding Background}" x:Name="dgColumnHeader">
                <Border x:Name="border" Grid.ColumnSpan="1" BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}">
                    <Rectangle Margin="3,3,3,3" HorizontalAlignment="Stretch" RadiusX="5" RadiusY="5" x:Name="PART_Rectangle" Fill="{DynamicResource ContentOutofFocusBrush}"></Rectangle>
                </Border>
                <ContentPresenter x:Name="content"  HorizontalAlignment="Center"  VerticalAlignment="Center" Content="{TemplateBinding Content}" />
            </Grid>
        </AdornerDecorator>    
    </ControlTemplate>


  [1]: http://i.stack.imgur.com/sxHUM.png