Directory path with space

Maybe you think this question is solved more and more before, but I have another problem. For example the directory path is “C:\Program Files (x86)\sth”. I don`t set it directly! I get it from registry. So, the directory path maybe different in another systems. How can I change the directory path to a valid one dynamically?

Thanks a lot.

Ya Ali.

Searching a lot and finding nothing major!

But I wrote my own codes.

    QList<QString> lst = installedPath.split("\\");
    for(int i=0;i<lst.size(); i++)
    {
        if(lst.at(i).indexOf(" ") != -1)
        {
            validLocation += "\"";
            validLocation += lst.at(i);
            validLocation += "\"";
            validLocation += "\\\\";
        }
        else
        {
            validLocation += lst.at(i);
            if(i != lst.size()-1)
                validLocation += "\\\\";
        }
    }