QT获取文件信息
//fileinformation.cpp
include "fileinformation.h"
#
FileInformation::FileInformation( QWidget *parent, Qt::WindowFlags f ) : QDialog( parent, f ){ setWindowTitle(tr("File Information")); LabelFileName = new QLabel(); LabelFileName->setText(tr("File Name:")); LineEditFileName = new QLineEdit(); PushButtonFile = new QPushButton( this); PushButtonFile->setText( tr( "File" ) ); LabelSize = new QLabel(); LabelSize->setText(tr("Size:")); LineEditSize = new QLineEdit(); LabelCreated = new QLabel(); LabelCreated->setText(tr("Created:")); LineEditCreated = new QLineEdit(); LabelLastModified = new QLabel(); LabelLastModified->setText(tr("Last Modified:")); LineEditLastModified = new QLineEdit(); LabelLastRead = new QLabel(); LabelLastRead->setText(tr("Last Read:")); LineEditLastRead = new QLineEdit(); LabelProperty = new QLabel(); LabelProperty->setText(tr("Property:")); CheckBoxIsDir = new QCheckBox(); CheckBoxIsDir->setText(tr("Dir")); CheckBoxIsFile = new QCheckBox(); CheckBoxIsFile->setText(tr("File")); CheckBoxIsSymLink = new QCheckBox(); CheckBoxIsSymLink->setText(tr("SymLink")); CheckBoxIsHidden = new QCheckBox(); CheckBoxIsHidden->setText(tr("Hidden")); CheckBoxIsReadable = new QCheckBox(); CheckBoxIsReadable->setText(tr("Readable")); CheckBoxIsWritable = new QCheckBox(); CheckBoxIsWritable->setText(tr("Writable")); CheckBoxIsExecutable = new QCheckBox(); CheckBoxIsExecutable->setText(tr("Executable")); PushButtonGet = new QPushButton( this); PushButtonGet->setText( tr("Get" )); QHBoxLayout *hbLayout1 = new QHBoxLayout (); hbLayout1->addWidget(LabelFileName); hbLayout1->addWidget(LineEditFileName); hbLayout1->addWidget(PushButtonFile); QHBoxLayout *hbLayout2 = new QHBoxLayout (); hbLayout2->addWidget(LabelSize); hbLayout2->addWidget(LineEditSize); QHBoxLayout *hbLayout3 = new QHBoxLayout(); hbLayout3->addWidget(LabelCreated); hbLayout3->addWidget(LineEditCreated); QHBoxLayout *hbLayout4 = new QHBoxLayout(); hbLayout4->addWidget(LabelLastModified); hbLayout4->addWidget(LineEditLastModified); QHBoxLayout *hbLayout5 = new QHBoxLayout(); hbLayout5->addWidget(LabelLastRead); hbLayout5->addWidget(LineEditLastRead); QHBoxLayout *hbLayout6 = new QHBoxLayout(); hbLayout6->addWidget(LabelProperty); hbLayout6->addStretch(); QHBoxLayout *hbLayout7 = new QHBoxLayout(); hbLayout7->addWidget(CheckBoxIsDir); hbLayout7->addWidget(CheckBoxIsFile); hbLayout7->addWidget(CheckBoxIsSymLink); hbLayout7->addWidget(CheckBoxIsHidden); hbLayout7->addWidget(CheckBoxIsReadable); hbLayout7->addWidget(CheckBoxIsWritable); hbLayout7->addWidget(CheckBoxIsExecutable); QVBoxLayout *vbLayout = new QVBoxLayout( this ); vbLayout->addLayout( hbLayout1 ); vbLayout->addLayout( hbLayout2 ); vbLayout->addLayout( hbLayout3 ); vbLayout->addLayout( hbLayout4 ); vbLayout->addLayout( hbLayout5 ); vbLayout->addLayout( hbLayout6 ); vbLayout->addLayout( hbLayout7 ); vbLayout->addWidget( PushButtonGet ); connect(PushButtonFile,SIGNAL(clicked()),this,SLOT(slotFile())); connect(PushButtonGet,SIGNAL(clicked()),this,SLOT(slotGet()));}FileInformation::~FileInformation(){}void FileInformation::slotFile(){ QString s = QFileDialog::getOpenFileName( //获取文件路径 this, "open file dialog", "/", "files (*)"); LineEditFileName->setText( s.toAscii().data());//文件路径}void FileInformation::slotGet(){ QFileInfo info(LineEditFileName->text()); //获取文件大小 //在不同的平台上，基本的C++类型如short，char，int，long，long long会有不同的字长。 //最好把它们转换为qint8，quint8，qint16，quint16，qint32， //quint32，qint64，quint64，这些类型能确保字长是不随平台改变的。 qint64 size = info.size(); //读取文件时间信息 QDateTime created = info.created(); QDateTime lastModified = info.lastModified(); QDateTime lastRead = info.lastRead(); //读取文件属性 bool isDir = info.isDir(); bool isFile = info.isFile(); bool isSymLink = info.isSymLink(); bool isHidden = info.isHidden(); bool isReadable = info.isReadable(); bool isWritable = info.isWritable(); bool isExecutable =info.isExecutable(); LineEditSize->setText (QString::number(size)); //显示文件时间信息 LineEditCreated->setText (created.toString()); LineEditLastModified->setText (lastModified.toString()); LineEditLastRead->setText (lastRead.toString()); //显示文件属性 CheckBoxIsDir->setCheckState (isDir?Qt::Checked:Qt::Unchecked); CheckBoxIsFile->setCheckState (isFile?Qt::Checked:Qt::Unchecked); CheckBoxIsSymLink->setCheckState (isSymLink?Qt::Checked:Qt::Unchecked); CheckBoxIsHidden->setCheckState (isHidden?Qt::Checked:Qt::Unchecked); CheckBoxIsReadable->setCheckState (isReadable?Qt::Checked:Qt::Unchecked); CheckBoxIsWritable->setCheckState (isWritable?Qt::Checked:Qt::Unchecked); CheckBoxIsExecutable->setCheckState (isExecutable?Qt::Checked:Qt::Unchecked);}----------------------------------------------------------------------------------------------
//fileinformation.h
#ifndef FILEINFORMATION_H
#define FILEINFORMATION_H#include <QtGui>class FileInformation : public QDialog { Q_OBJECTpublic: FileInformation( QWidget *parent=0, Qt::WindowFlags f=0 ); ~FileInformation();public: QLabel* LabelFileName; QLineEdit* LineEditFileName; QPushButton* PushButtonFile; QLabel* LabelSize; QLineEdit* LineEditSize; QLabel* LabelCreated; QLineEdit* LineEditCreated; QLabel* LabelLastModified ; QLineEdit* LineEditLastModified; QLabel* LabelLastRead ; QLineEdit* LineEditLastRead; QLabel* LabelProperty ; QCheckBox* CheckBoxIsDir; QCheckBox* CheckBoxIsFile; QCheckBox* CheckBoxIsSymLink; QCheckBox* CheckBoxIsHidden; QCheckBox* CheckBoxIsReadable; QCheckBox* CheckBoxIsWritable; QCheckBox* CheckBoxIsExecutable; QPushButton* PushButtonGet;public slots: void slotFile(); void slotGet();};#endif----------------------------------------------------------------------------------------------//main.cpp#include "fileinformation.h"
#include <QApplication>int main( int argc, char **argv ){ QFont font("ZYSong18030",12); QApplication::setFont(font); QApplication a( argc, argv ); FileInformation fileinformation; fileinformation.show(); return a.exec();}----------------------------------------------------------------------------------------------//fileinformation.pro
TEMPLATE = app
TARGET = fileinformationHEADERS = fileinformation.hSOURCES = fileinformation.cpp / main.cpp