notepad

#ifndef ABOUT_H

#define ABOUT_H

#include <QDialog>

#include <QMovie>

namespace Ui {

class about;

}

class about : public QDialog

{

    Q_OBJECT

public:

    explicit about(QWidget *parent = 0);

    ~about();

private slots:

    void moviestart();

    void moviestop();

private:

    Ui::about *ui;

    QMovie *movie;

};

#endif // ABOUT_H

#ifndef MAINWINDOW_H

#define MAINWINDOW_H

#include <QMainWindow>

#include "about.h"

namespace Ui {

class MainWindow;

}

class MainWindow : public QMainWindow

{

    Q_OBJECT

public:

    explicit MainWindow(QWidget *parent = 0);

    ~MainWindow();

protected:

    void closeEvent(QCloseEvent *event);

private slots:

    void Newfile();

    void Openfile();

    void Savefile();

    void SaveAsfile();

    void PrintFile();

    void setFont();

    void setColor();

    void getDate();

    void aboutWebsiteSlot();

    void aboutSoftwareSlot();

private:

    Ui::MainWindow *ui;

    QString savefilename;

};

#endif // MAINWINDOW_H

#include "about.h"

#include "ui_about.h"

#include <QDebug>

about::about(QWidget *parent) :

    QDialog(parent),

    ui(new Ui::about)

{

    ui->setupUi(this);

    //实例化

    this->movie = new QMovie("pe_4.gif");

    ui->movie_label->setMovie(movie);

    this->movie->start();

    qDebug()<<"this git have frame"<<movie->frameCount();

    this->connect(ui->startB,SIGNAL(clicked()),this,SLOT(moviestart()));

    QObject::connect(ui->stopB,SIGNAL(clicked()),this,SLOT(moviestop()));

}

about::~about()

{

    delete ui;

}

void about::moviestart()

{

    this->movie->start();

}

void about::moviestop()

{

    this->movie->stop();

}

/*  打开--文件路径--filedialog--Qfile.open---QTextStream

文件属性

 Qfile  setFileName

 QFileDialog getOpenfileName(this,"open file 标题"，"路径"，"过滤")

 QDir

 QTextStream

 Gtk-Message: 09:25:06.890: GtkDialog mapped without a transient parent. This is discouraged.

 QColor

 QFront

 QFrontDialog

QDateTime 格式  hh:mm YYYY/M/dd

            YYYY/M/dd hh:mm

添加图标：(放在工程目录下)

美工： 添加资源文件  --添加新文件---QT---rescurse file---res(名称)--添加前缀（add prefix）--添加文件（add file）--ui --edit--icon  --choice

ui->passLineEdit->setEchoModel(QLineEdit::Password)  ;  //非明文显示

全局的qApp  QCoreApplication::instance();

应用程序实例化指针

OllyDBG_1.8

关闭事件  dialog.exe()返回值

打包：

 release 编译

 ldd 查看依赖

 导出依赖

 */

#include "mainwindow.h"

#include "ui_mainwindow.h"

#include <QDebug>

#include <QFileDialog>

#include <QMessageBox>

#include <QDir>

#include <QTextStream>

#include <QFontDialog>

#include <QFont>

#include <QColorDialog>

#include <QColor>

#include <QDateTime>

#include <QUrl>  //地址

#include <QDesktopServices>  //访问桌面服务额

#include <QSound>

#include <QCloseEvent>

//所有的事件都是受保护的  QWiget

MainWindow::MainWindow(QWidget *parent) :

    QMainWindow(parent),

    ui(new Ui::MainWindow)

{

    ui->setupUi(this);

    this->setWindowTitle("Unititled --noted");   //设置标题

    //fimemenu

 QSound::play("tts.wav");

    QObject::connect(ui->actionNewFile,SIGNAL(triggered()),this,SLOT(Newfile()));

    QObject::connect(ui->actionOpen,SIGNAL(triggered()),this,SLOT(Openfile()));

    QObject::connect(ui->actionSave,SIGNAL(triggered()),this,SLOT(Savefile()));

     QObject::connect(ui->actionasSave,SIGNAL(triggered()),this,SLOT(SaveAsfile()));

    QObject::connect(ui->actionExit,SIGNAL(triggered()),this,SLOT(close()));

    //edit

    QObject::connect(ui->udaction,SIGNAL(triggered()),ui->textEdit,SLOT(undo()));

    QObject::connect(ui->rdaction,SIGNAL(triggered()),ui->textEdit,SLOT(redo()));

    QObject::connect(ui->cpaction,SIGNAL(triggered()),ui->textEdit,SLOT(copy()));

    QObject::connect(ui->cuaction,SIGNAL(triggered()),ui->textEdit,SLOT(cut()));

    QObject::connect(ui->psaction,SIGNAL(triggered()),ui->textEdit,SLOT(paste()));

    QObject::connect(ui->allaction,SIGNAL(triggered()),ui->textEdit,SLOT(selectAll()));

    QObject::connect(ui->coloraction,SIGNAL(triggered()),this,SLOT(setColor()));

    QObject::connect(ui->fontaction,SIGNAL(triggered()),this,SLOT(setFont()));

    QObject::connect(ui->dtaction,SIGNAL(triggered()),this,SLOT(getDate()));

    QObject::connect(ui->action_QT_Q,SIGNAL(triggered()),qApp,SLOT(aboutQt()));

    QObject::connect(ui->action_W,SIGNAL(triggered()),this,SLOT(aboutWebsiteSlot()));

    QObject::connect(ui->action_S,SIGNAL(triggered()),this,SLOT(aboutSoftwareSlot()));

}

MainWindow::~MainWindow()

{

    delete ui;

    // 对像  垃圾回收机制  只针对图形对象  容器  qtgui

    //qtCore  核心模块  需要手动释放

}

void MainWindow::closeEvent(QCloseEvent *event)

{

    if(ui->textEdit->document()->isModified())

        {

        QMessageBox msgBox;

          msgBox.setText("文件以修改。");

          msgBox.setInformativeText("是否需要保存？");

          msgBox.setStandardButtons(QMessageBox::Save | QMessageBox::Discard | QMessageBox::Cancel);

          msgBox.setDefaultButton(QMessageBox::Save);

          int ret = msgBox.exec();

          switch (ret) {

             case QMessageBox::Save:

                 // Save was clicked

              this->Savefile();

                 break;

             case QMessageBox::Discard:

                 // Don't Save was clicked

              event->accept();

                 break;

             case QMessageBox::Cancel:

                 // Cancel was clicked

              event->ignore();

                 break;

             default:

                 // should never be reached

                 break;

           }

    }

}

void MainWindow::Newfile()

{

    //判断是佛改变

    if(ui->textEdit->document()->isModified())

    {

        ui->textEdit->clear();

    }

    else

    {

        //清空编辑区内容

        ui->textEdit->clear();

        //改变窗口

        this->setWindowTitle("Untitle.txt -----selen");

    }

}

//打开文件

void MainWindow::Openfile()

{

    //获得文件名                                    标题                起始路径

    savefilename = QFileDialog::getOpenFileName(this,"Open File",QDir::currentPath());

    qDebug()<<savefilename;

    if(savefilename.isEmpty())  //isNULL

    {

        QMessageBox::information(this,"Error Message","Please Slect a Textfile");

        return;

    }

    //文件指针

    QFile *file = new QFile;

    file->setFileName(savefilename);

    bool ok=file->open(QIODevice::ReadOnly);

    if(ok)

    {

        //打开文件   流 内存   对流操作快   read  write  是对磁盘操作

        //

        QTextStream in(file);

        ui->textEdit->setText(in.readAll());  //

        file->close();

        this->setWindowTitle(savefilename+"-----selen");

        delete file;  //属于QCore 模块需要手动释放   图形类对象有一是QTGUI 有一个守护指针自动释放

    }

    else

    {

        //                                     标题                   信息

        QMessageBox::information(this,"Error Message","File open error"+file->errorString());

        return ;

    }

}

void MainWindow::SaveAsfile()

{

    savefilename = QFileDialog::getSaveFileName(this,"Save File",QDir::currentPath());

    if(savefilename.isEmpty())

    {

        QMessageBox::information(this,"Error Message","Please Select a Text File.");

        return ;

    }

    //创建文件对象

    QFile *file = new QFile;

    //设置文件名称

    file->setFileName(savefilename);

    bool ok = file->open(QIODevice::WriteOnly);

    if(ok)

    {

        QTextStream  out(file);

        //cout <<

        out<<ui->textEdit->toPlainText();  //转换为纯文本

        file->close();

        delete file;//删除文件对象

    }

    else

    {

        QMessageBox::information(this,"Error Message","Save File Error"+file->errorString());

        return ;

    }

}

void MainWindow::Savefile()

{

    //当前

    if(savefilename.isEmpty())

    {

        this->SaveAsfile();

    }

    else

    {

        QFile *file = new QFile;

        //设置文件名称

        file->setFileName(savefilename);

        bool ok = file->open(QIODevice::WriteOnly);

        if(ok)

        {

            QTextStream  out(file);

            //cout <<

            out<<ui->textEdit->toPlainText();  //转换为纯文本

            file->close();

            //设置当前标题

            this->setWindowTitle(savefilename+"-----selen");

            delete file;//删除文件对象

        }

    }

}

void MainWindow::PrintFile()

{

    //PrintDialog

}

void MainWindow::setFont()

{

    //get user select font

    bool ok;

    QFont font = QFontDialog::getFont(&ok,this);

    if(ok)

    {

        ui->textEdit->setFont(font);

    }

    else

    {

        QMessageBox::information(this,"Error Message","Error Set font!!  ");

    }

}

void MainWindow::setColor()

{  //创建颜色对象

    QColor color = QColorDialog::getColor(Qt::red,this);

    if(color.isValid())

    {

        ui->textEdit->setTextColor(color);

    }

    else

    {

        QMessageBox::information(this,"Error Massage","Color is isValid!!");

    }

}

void MainWindow::getDate()

{

    QDateTime current = QDateTime::currentDateTime();

    //按照指定格式 转化为字符串

    QString time = current.toString("hh:mm yyyy/M/dd");

    ui->textEdit->append(time);

}

void MainWindow::aboutWebsiteSlot()

{//直接打开  启动桌面服务

    QDesktopServices::openUrl(QUrl("https://home.cnblogs.com/u/countryboy666/"));

}

void MainWindow::aboutSoftwareSlot()

{

    about *dialog = new about;

    dialog->show();

    //dialog->exec();

}

#include "mainwindow.h"

#include <QApplication>

#include <QPixmap>

#include <QSplashScreen>

#include <QTime>

int main(int argc, char *argv[])

{

    QApplication a(argc, argv);

            //加载图片

          QPixmap pixmap("1bitX.png");

          //显示屏幕

          QSplashScreen splash(pixmap);

          splash.show();

          //

         // for(long long index = 0;index<8000000000000000000;index++);

      //   sleep(1);

       //处理事情

       //延时

          QTime t;

          t.start();

          while(t.elapsed()<1000)

              QCoreApplication::processEvents();

             MainWindow w;

             w.show();

             splash.finish(&w);

    return a.exec();

}