Qt5开发及实例-CH906.rar,Qt5利用QFileinfo类获得文件信息的代码

#include "fileinfo.h" #include <QHBoxLayout> #include <QVBoxLayout> #include <QFileDialog> #include <QDateTime> FileInfo::FileInfo(QWidget *parent,Qt::WindowFlags f) : QDialog(parent,f) { fileNameLabel = new QLabel(tr("文件名：")); fileNameLineEdit = new QLineEdit; fileBtn = new QPushButton(tr("文件")); sizeLabel = new QLabel(tr("大小：")); sizeLineEdit = new QLineEdit; createTimeLabel = new QLabel(tr("创建时间：")); createTimeLineEdit = new QLineEdit; lastModifiedLabel = new QLabel(tr("最后修改时间：")); lastModifiedLineEdit = new QLineEdit; lastReadLabel = new QLabel(tr("最后访问时间：")); lastReadLineEdit = new QLineEdit; propertyLabel = new QLabel(tr("属性：")); isDirCheckBox = new QCheckBox(tr("目录")); isFileCheckBox = new QCheckBox(tr("文件")); isSymLinkCheckBox = new QCheckBox(tr("符号连接")); isHiddenCheckBox = new QCheckBox(tr("隐藏")); isReadableCheckBox = new QCheckBox(tr("读")); isWritableCheckBox = new QCheckBox(tr("写")); isExecutableCheckBox = new QCheckBox(tr("执行")); getBtn = new QPushButton(tr("获得文件信息")); QGridLayout *gridLayout = new QGridLayout; gridLayout->addWidget(fileNameLabel,0,0); gridLayout->addWidget(fileNameLineEdit,0,1); gridLayout->addWidget(fileBtn,0,2); gridLayout->addWidget(sizeLabel,1,0); gridLayout->addWidget(sizeLineEdit,1,1,1,2); gridLayout->addWidget(createTimeLabel,2,0); gridLayout->addWidget(createTimeLineEdit,2,1,1,2); gridLayout->addWidget(lastModifiedLabel,3,0); gridLayout->addWidget(lastModifiedLineEdit,3,1,1,2); gridLayout->addWidget(lastReadLabel,4,0); gridLayout->addWidget(lastReadLineEdit,4,1,1,2); QHBoxLayout *layout2 = new QHBoxLayout; layout2->addWidget(propertyLabel); layout2->addStretch(); QHBoxLayout *layout3 = new QHBoxLayout; layout3->addWidget(isDirCheckBox); layout3->addWidget(isFileCheckBox); layout3->addWidget(isSymLinkCheckBox); layout3->addWidget(isHiddenCheckBox); layout3->addWidget(isReadableCheckBox); layout3->addWidget(isWritableCheckBox); layout3->addWidget(isExecutableCheckBox); QHBoxLayout *layout4 = new QHBoxLayout; layout4->addWidget(getBtn); QVBoxLayout *mainLayout = new QVBoxLayout(this); mainLayout->addLayout(gridLayout); mainLayout->addLayout(layout2); mainLayout->addLayout(layout3); mainLayout->addLayout(layout4); connect(fileBtn,SIGNAL(clicked()),this,SLOT(slotFile())); connect(getBtn,SIGNAL(clicked()),this,SLOT(slotGet())); } void FileInfo::slotFile() { QString fileName = QFileDialog::getOpenFileName(this,"打开","/", "files (*)"); fileNameLineEdit->setText(fileName); } void FileInfo::slotGet() { QString file = fileNameLineEdit->text(); QFileInfo info(file); //根据输入参数创建一个QFileInfo对象 qint64 size = info.size(); //获得QFileInfo对象的大小 QDateTime created = info.created(); //获得QFileInfo对象的创建时间 QDateTime lastModified = info.lastModified(); //获得QFileInfo对象的最后修改时间 QDateTime lastRead = info.lastRead(); //获得QFileInfo对象的最后访问时间 /* 判断QFileInfo对象的文件类型属性 */ bool isDir = info.isDir(); //是否为目录 bool isFile = info.isFile(); //是否为文件 bool isSymLink = info.isSymLink(); //(a) bool isHidden = info.isHidden(); //判断QFileInfo对象的隐藏属性 bool isReadable = info.isReadable(); //判断QFileInfo对象的读属性 bool isWritable = info.isWritable(); //判断QFileInfo对象的写属性 bool isExecutable = info.isExecutable(); //判断QFileInfo对象的可执行属性 /* 根据上面得到的结果更新界面显示 */ sizeLineEdit->setText(QString::number(size)); createTimeLineEdit->setText(created.toString()); lastModifiedLineEdit->setText(lastModified.toString()); lastReadLineEdit->setText(lastRead.toString()); isDirCheckBox->setCheckState(isDir?Qt::Checked:Qt::Unchecked); isFileCheckBox->setCheckState(isFile?Qt::Checked:Qt::Unchecked); isSymLinkCheckBox->setCheckState(isSymLink?Qt::Checked:Qt:: Unchecked); isHiddenCheckBox->setCheckState(isHidden?Qt::Checked:Qt:: Unchecked); isReadableCheckBox->setCheckState(isReadable?Qt::Checked:Qt:: Unchecked); isWritableCheckBox->setCheckState(isWritable?Qt::Checked:Qt:: Unchecked); isExecutableCheckBox->setCheckState(isExecutable?Qt::Checked: Qt:: Unchecked); } FileInfo::~FileInfo() { }