Hi,

Let me give you my solution.  I re-templated the default EventTitle style, adding a MouseLeftButtonDown event to the background of the grid background.

<Setter Property="Template">
    <Setter.Value>
        <ControlTemplate TargetType="ig:EventTitle">
            <Border HorizontalAlignment="Left" 
                    BorderThickness="{TemplateBinding BorderThickness}" 
                    Background="{TemplateBinding Background}" 
                    BorderBrush="{TemplateBinding BorderBrush}">
                <Grid Background="{x:Null}" MouseLeftButtonDown="EventItemGrid_MouseLeftButtonDown">
                     <Grid.RowDefinitions>
                          <RowDefinition Height="*" />
                          <RowDefinition Height="Auto" />
                     </Grid.RowDefinitions>
                     <TextBlock Text="{TemplateBinding FormattedText}" TextWrapping="Wrap" />
                     <TextBlock Text="{TemplateBinding Title}" TextWrapping="Wrap" Grid.Row="1"/> 
                </Grid>
            </Border>
        </ControlTemplate>
    </Setter.Value>                    
</Setter>

Then I added this event code to step thru the visual tree parents until you get to the EventTitle so that you could get to the details information.   The next step was to set the SelectedTime to the entry Time. 

private void EventItemGrid_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)

{
    Grid g = sender as Grid;
    DependencyObject dp = VisualTreeHelper.GetParent(g);
    while (dp != null && dp.GetType() != typeof(EventTitle))
    {
        dp = VisualTreeHelper.GetParent(dp);
    }
    if (dp.GetType() == typeof(EventTitle))
    {
        EventTitle et = dp as EventTitle;
            
        NumericTimeEntry nte =  et.EventEntry as NumericTimeEntry;                               
              
        (this.xamTimeline1.Axis as NumericTimeAxis).SelectedTime = nte.Time;
                
    }
}

Let me know if you have any questions.

Have you come up with a method?  I can set click events on EventTitles just fine, but have not been able to find a way to populate the details box.