title: xctk:IntegerUpDown custom style to hide ButtonSpinner
body: <p>On the <a href="http://wpftoolkit.codeplex.com/SourceControl/latest#Main/Source/ExtendedWPFToolkitSolution_35/Src/Xceed.Wpf.Toolkit/NumericUpDown/Themes/Generic.xaml" rel="nofollow noreferrer">xctk:IntegerUpDown</a>, I would like the textbox border and the ButtonSpinner to only be visible when focused or mouseover.
  It is easy enough to turn the border on/off using a <em>&lt;Style.Triggers&gt;</em> section.
  It is also possible to control the <em>ShowButtonSpinner</em> property.</p>
  
  <p>However, the content of the TextBox jumps to the right if I set <em>ShowButtonSpinner</em>=False.
  I would like to simply hide the ButtonSpinner without TextBox contents jumping around.</p>
  
  <p>Like this:</p>
  
  <p><img src="https://i.stack.imgur.com/q2CP6.png" alt="enter image description here"></p>
  
  <p>How can I get access to the appropriate property?</p>