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

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

Code:

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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

Code:

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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!!!

Did you escape the backslashes?

Code:

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

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