title: SWT no more handles, but there should be
body: <p>in a Eclipse RCP application i get the exception:</p>
  
  <pre><code>org.eclipse.swt.SWTError: No more handles
  at org.eclipse.swt.SWT.error(SWT.java:4423)
  at org.eclipse.swt.SWT.error(SWT.java:4312)
  at org.eclipse.swt.SWT.error(SWT.java:4283)
  at org.eclipse.swt.widgets.Widget.error(Widget.java:472)
  at org.eclipse.swt.widgets.Shell.createToolTipHandle(Shell.java:660)
  at org.eclipse.swt.widgets.Shell.toolTipHandle(Shell.java:1944)
  ...
  </code></pre>
  
  <p>I added the Sleak tool to track if there is a leak on resources.
  There is not. Sleak tells there are</p>
  
  <pre><code>63 Colors, 5 Cursors, 4 Fonts, 75 Images.
  </code></pre>
  
  <p>With the process explorer (MS sysiternals) i see this:</p>
  
  <pre><code>Handles 215
  GDI Handles 48
  USER Handles 23
  </code></pre>
  
  <p>From this information I think it is <strong>not</strong> a missing dispose problem.</p>
  
  <p>Does anyone have an idea where I can proceed to analyze the problem?</p>
  
  <p>Thanks!</p>