Bug 212291 SWT Chart render engine always uses 96 DPI(Display) resolution
chart/org.eclipse.birt.chart.device.swt/src/org/eclipse/birt/chart/device/swt/SwtRendererImpl.java
_lhmAllTriggers.clear( );
	}
	/**
	 * Free all allocated system resources.
	 */
	public void dispose( )
	{
		cleanUpTriggers( );
		if ( _iun != null )
		{
			Object obj = _iun.peerInstance( );
			if ( obj instanceof Composite )
			{
				Composite jc = (Composite) obj;
				if ( _eh != null )
				{
					if ( !jc.isDisposed( ) )
					{
						
						
						
						
						
						jc.removeMouseListener( _eh );
						jc.removeMouseMoveListener( _eh );
						jc.removeMouseTrackListener( _eh );
						jc.removeKeyListener( _eh );
						jc.removeFocusListener( _eh );
					}
					_eh.dispose( );