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POHow do I use the MouseWheel event to scroll through the TabItems of nested TabControls?
 

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  1. POHow do I use the MouseWheel event to scroll through the TabItems of nested TabControls?
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    <p>I have a TabControl that can contain a TabControl in each TabItem. There is the xaml-code:</p> <pre><code>&lt;TabControl Height="300" Width="500" MouseWheel="TabControl_MouseWheel"&gt; &lt;TabItem Header="1" Width="50"&gt; &lt;TabControl MouseWheel="TabControl_MouseWheel"&gt; &lt;TabItem Header="1" Width="50"&gt;&lt;/TabItem&gt; &lt;TabItem Header="2" Width="50"&gt;&lt;/TabItem&gt; &lt;TabItem Header="3" Width="50"&gt;&lt;/TabItem&gt; &lt;TabItem Header="4" Width="50"&gt;&lt;/TabItem&gt; &lt;TabItem Header="5" Width="50"&gt;&lt;/TabItem&gt; &lt;TabItem Header="6" Width="50"&gt;&lt;/TabItem&gt; &lt;TabItem Header="7" Width="50"&gt;&lt;/TabItem&gt; &lt;TabItem Header="8" Width="50"&gt;&lt;/TabItem&gt; &lt;TabItem Header="9" Width="50"&gt;&lt;/TabItem&gt; &lt;/TabControl&gt; &lt;/TabItem&gt; &lt;TabItem Header="2" Width="50"&gt; &lt;TabControl MouseWheel="TabControl_MouseWheel"&gt; &lt;TabItem Header="1" Width="50"&gt;&lt;/TabItem&gt; &lt;TabItem Header="2" Width="50"&gt;&lt;/TabItem&gt; &lt;TabItem Header="3" Width="50"&gt;&lt;/TabItem&gt; &lt;TabItem Header="4" Width="50"&gt;&lt;/TabItem&gt; &lt;TabItem Header="5" Width="50"&gt;&lt;/TabItem&gt; &lt;TabItem Header="6" Width="50"&gt;&lt;/TabItem&gt; &lt;TabItem Header="7" Width="50"&gt;&lt;/TabItem&gt; &lt;TabItem Header="8" Width="50"&gt;&lt;/TabItem&gt; &lt;TabItem Header="9" Width="50"&gt;&lt;/TabItem&gt; &lt;/TabControl&gt; &lt;/TabItem&gt; &lt;TabItem Header="3" Width="50"&gt;&lt;/TabItem&gt; &lt;TabItem Header="4" Width="50"&gt;&lt;/TabItem&gt; &lt;TabItem Header="5" Width="50"&gt;&lt;/TabItem&gt; &lt;TabItem Header="6" Width="50"&gt;&lt;/TabItem&gt; &lt;TabItem Header="7" Width="50"&gt;&lt;/TabItem&gt; &lt;TabItem Header="8" Width="50"&gt;&lt;/TabItem&gt; &lt;TabItem Header="9" Width="50"&gt;&lt;/TabItem&gt; &lt;/TabControl&gt; </code></pre> <p>I want to change the selected item of tabcontrols by mouse wheeling. There is MouseWheel event handler:</p> <pre><code>private void TabControl_MouseWheel(object sender, MouseWheelEventArgs e) { TabControl tabControl = sender as TabControl; if (tabControl != null) { if (e.Delta &lt; 0) { if (tabControl.SelectedIndex + 1 &lt; tabControl.Items.Count) tabControl.SelectedItem = tabControl.Items[tabControl.SelectedIndex + 1]; } else { if (tabControl.SelectedIndex - 1 &gt; -1) tabControl.SelectedItem = tabControl.Items[tabControl.SelectedIndex - 1]; } } } </code></pre> <p>The problem is that scrolling with the mouse wheeling just changes the selected item in the upper TabControl. I want other TabControls to react to mouse wheeling too.</p> <p>For example: if the cursor is in one of the upper TabControl items then I want them to react to mouse wheel scrolling, otherwise I want the lower TabControls items to react to the scrolling.</p>
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