Qt文件复制并创建路径

bool ResigerWidget::copyFileToPathA(QString sourceDir ,QString toDir, bool coverFileIfExist)
{
    toDir.replace("\\","/");
    if (sourceDir == toDir){
        //qDebug()<< "aa";
        return true;
    }
    if (!QFile::exists(sourceDir)){
        //qDebug()<< "aa1";
        return false;
    }
    QDir *createfile = new QDir;
    bool exist = createfile->exists(toDir);
    if (exist){
        if(coverFileIfExist){
            createfile->remove(toDir);
        }
    }//end if

    if(!QFile::copy(sourceDir, toDir))
    {
        qDebug()<< "sourceDir"<<sourceDir;
        qDebug()<< "toDir"<<toDir;
        qDebug()<< "aa2";
        return false;
    }
    return true;
}