JDesktopPane.setOpaque(false) does not transparent background

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What steps will reproduce the problem?
1.put JDesktopPane component.
2.setOpaque(false) for JDesktopPane.

What is the expected output? What do you see instead?
JDesktopPane.setOpaque(false) does not transparent background. Other Look and 
feels draw correctly.

What version of the product are you using? On what operating system? What
JRE version?
Test Program with seaglasslookandfeel-0.1.7.3.jar on Windows 7 and JRE 1.6.0_20

Please provide any additional information below.
Screenshot and Test source code is attached.

Original issue reported on code.google.com by shuna500...@gmail.com on 7 Sep 2010 at 4:58

Attachments:

• DesktopPaneProbrem.png
• JDesktopPaneTest.java

[GoogleCodeExporter]

This issue was closed by revision r1637.

Original comment by rosstaus...@googlemail.com on 15 Nov 2013 at 12:01

• Changed state: Fixed

[GoogleCodeExporter]

I fixed this issue in revision 1637.

Checkout the latest version from the repository.

Have fun,
- Rossi

Original comment by rosstaus...@googlemail.com on 15 Nov 2013 at 12:02