title: C# WPF how to set tooltip size in a tabcontrol
body: <p>I have a tabcontrol in which each tabITem is rendered a very big font symbol (see image below)</p>
  
  <p><a href="https://i.stack.imgur.com/wofCS.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/wofCS.png" alt="pic1 big font size for tab header"></a></p>
  
  <p>now the tooltip is set to a very big size according to the very big size of the aforementioned tabItem char.</p>
  
  <p><a href="https://i.stack.imgur.com/0jbD8.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/0jbD8.png" alt="enter image description here"></a></p>
  
  <p>What I'd like is to keep the tabItem symbol very big but being able to resize the tooltip font.</p>
  
  <p>PLUS 
  I can't understand why the tabheader tooltip is randomly set on all children. I want it on the tabheader itself and not floating everywhere!</p>
  
  <p><a href="https://i.stack.imgur.com/IDL2U.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/IDL2U.png" alt="enter image description here"></a></p>
  
  <p>--EDIT---
  As requested here is a relevant part of my xaml. I only include tab2 which is shorter but there are several tabItems and all behave the same way.</p>
  
  <pre><code> &lt;!-- +++++++++++++ TAB2 ++++++++++++ --&gt;
    &lt;TabItem Name="tabItem2" HorizontalAlignment="Center" Height="80" IsSelected="false" FontSize="{StaticResource TAB_FONTSIZE}"&gt;
      &lt;TabItem.Header&gt;
        &lt;StackPanel&gt;
          &lt;TextBlock Text="&amp;#xF0F7;"/&gt;  &lt;-------------unicode symbol very big!
          &lt;TextBlock Name="tbTab2" Visibility="Hidden" FontSize="{StaticResource BUTTON_FONTSIZE}" /&gt;
        &lt;/StackPanel&gt;
      &lt;/TabItem.Header&gt;
      &lt;TabItem.Background&gt;
        &lt;ImageBrush/&gt;
      &lt;/TabItem.Background&gt;
    &lt;/TabItem&gt;
  </code></pre>
  
  <p>while tooltip is set in code-behind</p>
  
  <pre><code>tabItem2.ToolTip = Langs.Word(Langs.eWords.Pallet);
  </code></pre>
  
  <p>and it gets the HUGE size of the aforementioned unicode char.</p>
  
  <p>Thanx for any help</p>