Qt创建文件夹之间的链接 [英] Qt create Link between folders

问题描述

我必须建立一个小对话框，创建一个文件夹的符号链接。

I have to build a small dialog that creates a symbolic link to a folder.

在windows中，我将使用mklink / D命令。

In windows I would use mklink /D command.

有可能在Qt中创建这样的链接吗？我只看到QFile创建文件之间的链接，他们需要以.lnk结尾（ http://qt-project.org/doc/qt-4.8/qfile.html#link ）
QDir另一方面不提供任何东西。

Is there a possibility to create such links in Qt? I have only seen QFile creating links between files and that they need to end with .lnk (http://qt-project.org/doc/qt-4.8/qfile.html#link) QDir on the other hand does not provide anything.

有任何建议吗？

最好的问候，
Richard

Best regards, Richard

推荐答案

是否可以在Qt中创建此类链接？

Is there a possibility to create such links in Qt?

，但只有在Unix上。

Yes, it is, but only on Unix.

不幸的是，这不是QFile在Windows上，甚至QDir不支持。在我看来，这是一个非常有用的功能，可以在 Qt Bug tracker 。

Unfortunately, this is not supported by QFile on Windows, not even by QDir. In my opinion, this would be a useful feature to submit a report for on the Qt Bug tracker.

解决方法是编写以下内容：

The workaround would be to write something like this:

#ifdef Q_OS_UNIX
    QFile::link(sourceDir.absolutePath(), destDir.absolutePath());
#elif Q_OS_WIN
    QProcess process;
    process.start("mklink /D");

    // Wait for it to start
    if(!process.waitForStarted())
        return 0;

    bool retval = false;
    QByteArray buffer;
    while ((retval = process.waitForFinished()));
        buffer.append(process.readAll());

    if (!retval) {
        qDebug() << "Process error:" << process.errorString();
        qDebug() << "Output:" << buffer;
        return 1;
    }
#endif

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