[Qt-interest] The application title can not display the right string in AIX 5.3.0.0

[lvbing lvbing]

Hello everyone:
I have some trouble when I setWindowTitle in AIX.
my platform is:
OS: AIX 5.3.0.0
Qt: 4.5.2
 When I use QWidget::setWindowTitle( tr("标题栏"));
of course, the title name is in chinese especially.
and when I run the applicatoin,the windows title can not display right.
the title string is show like "A   ".

but the same code in AIX 6.2.1.0 or other linux OS is right!
so I don't know how to resolve it?
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