文件得主要目录如下图:
再mainwindow.ui中只加了一个pushbutton
dialog.cpp中没有任何操作
最后付下主要代码:
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "ui_dialog.h"
#include <QFile>
#include <QFileDialog>
#include <QMessageBox>
#include <QDebug>
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::on_pushButton_clicked()
{
QString fileFull, fileName, filePath,fileSuffix;
QFileInfo fileinfo;
fileFull = QFileDialog::getOpenFileName(this,tr("file"),"/",tr("text(*.txt)")); //获取整个文件名
//fileFull = E:\QtCode\newExample\myTry\新建文本文档.txt
//获取文件信息
fileinfo = QFileInfo(fileFull);
//fileinfo = E:\QtCode\newExample\myTry\新建文本文档.txt
//获取文件名字
fileName = fileinfo.fileName();
//fileName = 新建文本文档.txt
//获取文件后缀
fileSuffix = fileinfo.suffix();
//fileSuffix = txt
//获取文件绝对路径
filePath = fileinfo.absolutePath();
if(!fileFull.isNull())
{
QFile file(fileFull);
if(!file.open(QFile::ReadOnly | QFile::Text))
{
QMessageBox::warning(this,tr("Error"),tr("read file error:&1").arg(file.errorString()));
return;
}
QTextStream in(&file);
QApplication::setOverrideCursor(Qt::WaitCursor);
dialog = new Dialog(this);
dialog->ui->lineEdit->setText(fileFull);
dialog->ui->lineEdit_2->setText(fileName);
dialog->ui->textEdit->setPlainText(in.readAll());
QApplication::restoreOverrideCursor();
dialog->show();
}
else
{
qDebug()<<"cancel";
}
// FileDialog::getOpenFileName(this,
// tr("Open File"),
// "/",
// tr("All Files (*.*)"));
// QDesktopServices::openUrl(QUrl::fromLocalFile(QFileInfo(fileName).absoluteFilePath()));
}