Qt练习--打开文件

1、需求
打开某个文件

2、逻辑

void Dialog::getOpenFile()
{
    QString path = QFileDialog::getOpenFileName(this, tr("Open Image"), ".", tr("Image Files(*.jpg *.png)"));
    if(path.length() == 0) {
            QMessageBox::information(NULL, tr("Path"), tr("You didn't select any files."));
    } else {
            std::string str = path.toStdString();
            const char* ch = str.c_str();
            QFileInfo fi;
            fi = QFileInfo(path);
            QString filePath;
            QString fileName;
            filePath = fi.absolutePath();
            fileName = fi.fileName();
            QMessageBox::information(NULL, tr("Path"), tr("You selected ") + path + ",path=" + filePath + ",name=" + fileName );
    }
    accept();
}

void Dialog::getOpenFile()
{
    QString path = QFileDialog::getOpenFileName(this, tr("Open Image"), ".", tr("Image Files(*.jpg *.png)"));
    if(path.length() == 0) {
            QMessageBox::information(NULL, tr("Path"), tr("You didn't select any files."));
    } else {
            std::string str = path.toStdString();
            const char* ch = str.c_str();
            QFileInfo fi;
            fi = QFileInfo(path);
            //获取绝对路径和名称
            QString filePath;
            QString fileName;
            filePath = fi.absolutePath();
            fileName = fi.fileName();
            //更改名称，不能是中文
            QString newName = filePath+"/111.PNG";
            std::string str2 = newName.toStdString();
            const char* ch2 = str2.c_str();
            int ret = rename(ch,ch2);
            QMessageBox::information(NULL, tr("Path"), tr("You selected ") + path + ",path=" + filePath + ",name=" + fileName );
    }
    accept();
}

参考QString和char*的转换
http://www.cnblogs.com/Romi/archive/2012/03/12/2392478.html


4、附加需求
解压文件：
Rar.exe e  log.rar
C:\Program Files\WinRAR\Rar.exe

---