24.qint64转QString 以及获取文件属性

qint64转QString

1 qint64 size = info.size();
2     //qint64 转QString
3     QString size2 = tr("%1").arg(size);

获取文件属性

 1 #include "mainwindow.h"
 2 #include "ui_mainwindow.h"
 3 #include <QFileDialog>
 4 #include <QDebug>
 5 #include <QFileInfo>
 6 #include <QDateTime>
 7 
 8 MainWindow::MainWindow(QWidget *parent) :
 9     QMainWindow(parent),
10     ui(new Ui::MainWindow)
11 {
12     ui->setupUi(this);
13 }
14 
15 MainWindow::~MainWindow()
16 {
17     delete ui;
18 }
19 
20 void MainWindow::on_pushButton_clicked()
21 {
22     QString str = QFileDialog::getOpenFileName(this,"openfile","/","*.*");
23     ui->lineEdit->setText(str);
24 
25     QString strall;
26     //根据路径初始化
27     QFileInfo info(str);
28 
29     qint64 size = info.size();
30     //qint64 转QString
31     QString size2 = tr("%1").arg(size);
32     QDateTime created = info.created();
33     QDateTime lastchange = info.lastModified();
34     QDateTime lastread = info.lastRead();
35 
36     strall = strall + "文件大小:" + size2 + "
";
37     strall = strall + "创建时间:" + created.toString() + "
";
38     strall = strall + "最后修改时间:" + lastchange.toString() + "
";
39     strall = strall + "最后阅读时间:" + lastread.toString() + "
";
40 
41     //判断是否是目录
42     bool isdir = info.isDir();
43     //判断是否是exe
44     bool isexe = info.isExecutable();
45     //判读是否为隐藏文件
46     info.isHidden();
47     //判断是否为文件
48     info.isFile();
49     //判断是否为根目录
50     info.isRoot();
51     //判断是否为只读
52     info.isReadable();
53     
54     
55     ui->textEdit->setText(strall);
56     
57 }

运行效果