title: How to properly use Image as ToolTip?
body: <p>I have a <code>BitmapSource</code> 1690x214 (taken from an EMF file using <a href="https://stackoverflow.com/a/11102709/995246">this</a> code), and I want to use this image as <code>ToolTip</code>. This is the image displayed using Paint:</p>
  
  <p><img src="https://i.stack.imgur.com/hLq15.png" alt="enter image description here"></p>
  
  <p>So i wrote this code:</p>
  
  <pre><code>BitmapSource bmp = myBitmapSource; // "Dk01Light.EMF"
  
  Image img = new Image()
  {
      Source = bmp,
      Width = bmp.Width,
      Height = bmp.Height,
      Stretch = Stretch.Uniform,
  };
  
  myTooltip = img;
  </code></pre>
  
  <p>And this is the result:</p>
  
  <p><img src="https://i.stack.imgur.com/rAWWm.png" alt="enter image description here"></p>
  
  <p>As you can see, the right and bottom <em>margin</em> are completly different. Why? How can i fix this problem?</p>