title: How to add a new button to buttons bar of JFace dialog
body: <p>I need a button to be constantly placed at the bottom left corner of my JFace dialog even on re size of dialog.</p>
  
  <p>I have overridden the createButtonsForButtonBar()</p>
  
  <pre><code>protected void createButtonsForButtonBar(Composite parent)
  {
      sampleButton = createButton(parent, IDialogConstants.NO_ID, "Sample", true);
      createButton(parent, IDialogConstants.OK_ID,"OK", false);
      createButton(parent, IDialogConstants.CANCEL_ID,"Close", false);
  }
  </code></pre>
  
  <p>I want the sample button to be placed at the bottom left, followed by spaces and then ok,cancel.</p>
  
  <p>How do i achieve this?</p>