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<title>LeakExample.java</title>
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<b>
<p style="margin-top: 0; margin-bottom: 0"><font COLOR="#7f0055">import </font></b>org.eclipse.swt.*;</p>
<b>
<p style="margin-top: 0; margin-bottom: 0"><font COLOR="#7f0055">import </font></b>org.eclipse.swt.graphics.*;</p>
<b>
<p style="margin-top: 0; margin-bottom: 0"><font COLOR="#7f0055">import </font></b>org.eclipse.swt.widgets.*;</p>
<b>
<p style="margin-top: 0; margin-bottom: 0"><font COLOR="#7f0055">import </font></b>org.eclipse.swt.events.*;</p>
<b>
<p style="margin-top: 0; margin-bottom: 0"><font COLOR="#7f0055">import </font></b>org.eclipse.swt.layout.*;</p>
<b>
<p style="margin-top: 0; margin-bottom: 0"><font COLOR="#7f0055">import </font></b>org.eclipse.swt.program.*;</p>
<b>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;</p>
<p style="margin-top: 0; margin-bottom: 0"><font COLOR="#7f0055">public class </font></b>LeakExample
{</p>
<p style="margin-top: 0; margin-bottom: 0"><b><font COLOR="#7f0055">&nbsp;&nbsp;&nbsp;
static </font></b>Display display;</p>
<p style="margin-top: 0; margin-bottom: 0"><b><font COLOR="#7f0055">&nbsp;&nbsp;&nbsp;
static </font></b>Shell shell;</p>
<p style="margin-top: 0; margin-bottom: 0"><b><font COLOR="#7f0055">&nbsp;&nbsp;&nbsp;
static </font></b>List list;</p>
<p style="margin-top: 0; margin-bottom: 0"><b><font COLOR="#7f0055">&nbsp;&nbsp;&nbsp;
static </font></b>Canvas canvas;</p>
<p style="margin-top: 0; margin-bottom: 0"><b><font COLOR="#7f0055">&nbsp;&nbsp;&nbsp;
static </font></b>Image image;</p>
<font SIZE="2">
<p style="margin-top: 0; margin-bottom: 0">&nbsp;</p>
</font><b>
<p style="margin-top: 0; margin-bottom: 0"><font COLOR="#7f0055">public static
void </font></b>main(String[] args) {</p>
<p style="margin-top: 0; margin-bottom: 0"><font color="#3F7F5F">&nbsp;&nbsp;&nbsp;
// DeviceData data = <b>new </b>DeviceData();</font></p>
<p style="margin-top: 0; margin-bottom: 0"><font color="#3F7F5F">&nbsp;&nbsp;&nbsp;
// data.tracking = <b>true</b>;</font></p>
<p style="margin-top: 0; margin-bottom: 0"><font color="#3F7F5F">&nbsp;&nbsp;&nbsp;
// display = <b>new </b>Display(data);</font></p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp; display = <b><font COLOR="#7f0055">new
</font></b>Display();</p>
<p style="margin-top: 0; margin-bottom: 0"><font COLOR="#3f7f5f">&nbsp;&nbsp;&nbsp;
// Sleak sleak = new Sleak();</font></p>
<font SIZE="2">
<p style="margin-top: 0; margin-bottom: 0"></font><font COLOR="#3f7f5f">&nbsp;&nbsp;&nbsp;
// sleak.open();</font></p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp; shell = <b><font COLOR="#7f0055">new
</font></b>Shell(display);</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp; shell.setLayout(<b><font COLOR="#7f0055">new
</font></b>FillLayout());</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp; list = <b><font COLOR="#7f0055">new
</font></b>List(shell, SWT.BORDER | SWT.SINGLE | SWT.V_SCROLL | SWT.H_SCROLL);</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp;
list.setItems(Program.getExtensions());</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp; canvas = <b><font COLOR="#7f0055">new
</font></b>Canvas(shell, SWT.BORDER);</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp;
canvas.addPaintListener(<b><font COLOR="#7f0055">new </font></b>PaintListener()
{</p>
<p style="margin-top: 0; margin-bottom: 0"><b><font COLOR="#7f0055">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
public void </font></b>paintControl(PaintEvent e) {</p>
<p style="margin-top: 0; margin-bottom: 0"><b><font COLOR="#7f0055">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
if </font></b>(image != <b><font COLOR="#7f0055">null</font></b>) {</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
e.gc.drawImage(image, 0, 0);</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
}</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
}</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp; });</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp;
list.addSelectionListener(<b><font COLOR="#7f0055">new </font></b>SelectionAdapter()
{</p>
<p style="margin-top: 0; margin-bottom: 0"><b><font COLOR="#7f0055">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
public void </font></b>widgetSelected(SelectionEvent e) {</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
image = <b><font COLOR="#7f0055">null</font></b>; <font color="#3F7F5F">
// potentially leak one image&nbsp;</font></p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
String[] selection = list.getSelection();</p>
<p style="margin-top: 0; margin-bottom: 0"><b><font COLOR="#7f0055">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
if </font></b>(selection.length != 0) {</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Program program = Program.findProgram(selection[0]);</p>
<p style="margin-top: 0; margin-bottom: 0"><b><font COLOR="#7f0055">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
if </font></b>(program != <b><font COLOR="#7f0055">null</font></b>) {</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
ImageData imageData = program.getImageData();</p>
<p style="margin-top: 0; margin-bottom: 0"><b><font COLOR="#7f0055">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
if </font></b>(imageData != <b><font COLOR="#7f0055">null</font></b>) {</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<b><font COLOR="#7f0055">if </font></b>(image != <b><font COLOR="#7f0055">null</font></b>)
image.dispose();</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
image = <b><font COLOR="#7f0055">new </font></b>Image(display, imageData);</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
}</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
}</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
}</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
canvas.redraw();</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
}</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp; });</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp;
shell.setSize(shell.computeSize(SWT.DEFAULT, 200));</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp; shell.open();</p>
<p style="margin-top: 0; margin-bottom: 0"><b><font COLOR="#7f0055">&nbsp;&nbsp;&nbsp;
while </font></b>(!shell.isDisposed()) {</p>
<p style="margin-top: 0; margin-bottom: 0"><b><font COLOR="#7f0055">&nbsp;&nbsp;&nbsp;
if </font></b>(!display.readAndDispatch()) display.sleep();</p>
<p style="margin-top: 0; margin-bottom: 0">&nbsp;&nbsp;&nbsp; }</p>
<p style="margin-top: 0; margin-bottom: 0">}</p>
<p style="margin-top: 0; margin-bottom: 0">}</p>
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