paip.c++ qt 目录遍历以及文件操作

作者Attilax ，  EMAIL:1466519819@qq.com 

来源：attilax的专栏

地址：http://blog.csdn.net/attilax

#include <QMessageBox>

#include <QFileDialog>

#include "helo.h"

//#include <qfile.h>

//#include <qdir.h>

//#include <qfileinfo.h>

//#include<qdiriterator.h>

 #include <QtCore>

//#include <QFileInfoListIterator>

//#include "qfileinfo.h"

//#include <QDirIterator>

//#include <attilaxc9>

//#include <QDirIterator>

#include <qtextstream.h>

//for select  dir and scan pic

void MainWindow::on_pushButton_2_clicked()

{

    /*

    QFileDialog *fileDialog = new QFileDialog(this);

    fileDialog->setWindowTitle(tr("Open Image"));

    fileDialog->setDirectory(".");

    //     fileDialog->setFilter(tr("Image Files(*.jpg *.png)"));

    if(fileDialog->exec() == QDialog::Accepted) {

        QString path = fileDialog->selectedFiles()[0];

        QMessageBox::information(NULL, tr("Path"), tr("You selected ") + path);

    } else {

        //  QMessageBox::information(NULL, tr("Path"), tr("You didn't select any files."));

    }

    */

    QString   path=QFileDialog::getExistingDirectory(NULL, tr("选择文件夹"),"c:\\i",QFileDialog::ShowDirsOnly);

    QDir dir(path);

    if (!dir.exists())

        return ;

    // dir.setFilter(QDir::Dirs|QDir::Files);

    //  dir.setSorting(QDir::DirsFirst);

    //   QFileInfoList list = dir.entryInfoList();

    QFileInfoList list = dir.entryInfoList();

    QDirIterator it(path,QDirIterator::NoIteratorFlags);

    while (it.hasNext()) {

        QString filename=   it.next();

        QString path_ext1=path+"/.";

        QString path_ext2=path+"/..";

        if(filename== path_ext1 || filename== path_ext2)

            continue;

        qDebug() << filename;

        processImg(filename);

    }

    /**/

}

void MainWindow ::output2log(QString filename,QString txt)

{

    QString fileName =filename;

    QFile f( fileName );

    f.open(QIODevice::WriteOnly );

    QTextStream t(&f);

    t <<  txt;

    f.close();

}