解决QProcess使用setProcessEnvironment环境变量不能生效的问题

QProcess* myProcess = new QProcess(this);
QProcessEnvironment env = QProcessEnvironment::systemEnvironment();
env.insert("PATH", "C:/AppPath;" + env.value("PATH"));
myProcess->setProcessEnvironment(env);
myProcess->start("App.exe");

QProcess* myProcess = new QProcess(this);
QString path = "C:/AppPath;" + qgetenv("PATH");
qputenv("PATH", path.toStdString().c_str());
myProcess->setProcessEnvironment(env);
myProcess->start("App.exe");

bool QProcessPrivate::callCreateProcess(QProcess::CreateProcessArguments *cpargs)
{
    if (modifyCreateProcessArgs)
        modifyCreateProcessArgs(cpargs);
    bool success = CreateProcess(cpargs->applicationName, cpargs->arguments,
                                 cpargs->processAttributes, cpargs->threadAttributes,
                                 cpargs->inheritHandles, cpargs->flags, cpargs->environment,
                                 cpargs->currentDirectory, cpargs->startupInfo,
                                 cpargs->processInformation);
    if (stdinChannel.pipe[0] != INVALID_Q_PIPE) {
        CloseHandle(stdinChannel.pipe[0]);
        stdinChannel.pipe[0] = INVALID_Q_PIPE;
    }
    if (stdoutChannel.pipe[1] != INVALID_Q_PIPE) {
        CloseHandle(stdoutChannel.pipe[1]);
        stdoutChannel.pipe[1] = INVALID_Q_PIPE;
    }
    if (stderrChannel.pipe[1] != INVALID_Q_PIPE) {
        CloseHandle(stderrChannel.pipe[1]);
        stderrChannel.pipe[1] = INVALID_Q_PIPE;
    }
    return success;
}