title: Help "?" button
body: <p>How can add this button to the title bar in WPF, by it being so used in a lot of applications I thought it would be built in or something, but looks like it isn't. Anyway let me know if you know anything about this.</p>
  
  <p>Thanks.</p>
  
  <p>Edit:</p>
  
  <p>Isn't there anything equivalent to <a href="http://msdn.microsoft.com/en-us/library/system.windows.forms.form.helpbutton.aspx" rel="noreferrer">this</a>?</p>
  
  <p>Basically, to have the ? icon in win forms, all you need to do is this:</p>
  
  <pre><code>public Form1()
  {
      InitializeComponent();
  
      this.HelpButton = true;
      this.MaximizeBox = false;
      this.MinimizeBox = false;
  }
  </code></pre>
  
  <p>Doesn't WPF have anything like that?</p>