How to use QProcess::execute() if the parameter has non-ascii?

[yangyunzhao]

In my program, I use QProcess::execute() to execute some cmds.
Such as

QString x = "copy a.txt b.txt"
QProcess::execute(x);

QString x = "copy a.txt b.txt"
QProcess::execute(x);

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It works OK.

But if the "x" has non-ascii.Such as

QString x = "copy c:\中文\a.txt c:\中文\b.txt"; 
QProcess::execute(x).

QString x = "copy c:\中文\a.txt c:\中文\b.txt"; 
QProcess::execute(x).

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It doesn't has any effect.
Could you give me some helps? Thans a lot!!!