Qt Creator 显示时间退出界面产生新的界面上传本地文件界面

客官°小女子只卖身不卖艺 2023-06-08 14:54 18阅读 0赞

#ifndef MAINWINDOW_H
    #define MAINWINDOW_H
    
    #include <QMainWindow>
    #include <QTimer>
    #include <QDateTime>
    
    namespace Ui {
    class MainWindow;
    }
    
    class MainWindow : public QMainWindow
    {
        Q_OBJECT
    
    public:
        explicit MainWindow(QWidget *parent = 0);
        ~MainWindow();
    
    private:
        Ui::MainWindow *ui;
    
        QTimer qtimer;
    
    private slots:
        void ExeClose();
        void TimerProc();
        void ReLogin();
    };
    
    #endif // MAINWINDOW_H

mainwindow.h

#include "mainwindow.h"
    #include "login.h"
    #include "ui_mainwindow.h"
    
    
    MainWindow::MainWindow(QWidget *parent) :
        QMainWindow(parent),
        ui(new Ui::MainWindow)
    {
        ui->setupUi(this);
    
        connect(ui->actionClose, SIGNAL(triggered()), this, SLOT(ExeClose()));
        connect(ui->actionRelogin, SIGNAL(triggered()), this, SLOT(ReLogin()));
    
        connect(&qtimer,SIGNAL(timeout()),SLOT(TimerProc()));
        qtimer.start(1000);
    }
    
    MainWindow::~MainWindow()
    {
        delete ui;
    }
    
    
    void MainWindow::ExeClose()
    {
        ui->statusBar->showMessage("Close MainWindow", 3000);
        close();
    }
    
    void MainWindow::TimerProc()
    {
        ui->statusBar->showMessage(QDateTime::currentDateTime().toString("yyyy-MM-dd HH:mm:ss zzz"));
    }
    
    void MainWindow::ReLogin()
    {
        Login * LoginFrm = new Login(this);
        LoginFrm->setModal(true);
        LoginFrm->showNormal();
    }

mainwindow.cpp

设置新界面

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyNzc3ODA0_size_16_color_FFFFFF_t_70][]

#ifndef LOGIN_H
    #define LOGIN_H
    
    #include <QDialog>
    #include <QLineEdit>
    #include <QGridLayout>
    #include <QPushButton>
    #include <QFileDialog>
    
    namespace Ui {
    class Login;
    }
    
    class Login : public QDialog
    {
        Q_OBJECT
    
    public:
        explicit Login(QWidget *parent = 0);
        ~Login();
    
    private:
        Ui::Login * ui;
        QLineEdit * p_lineEdit;
        QGridLayout * p_MainLayOut;
        QPushButton * p_QPushButton;
    
    private slots:
        void ShowFile();
    };
    
    #endif // LOGIN_H

#include "login.h"
    #include "ui_login.h"
    
    Login::Login(QWidget *parent) :
        QDialog(parent),
        ui(new Ui::Login)
    {
        ui->setupUi(this);
    
        p_lineEdit = new QLineEdit(this);
        p_MainLayOut = new QGridLayout(this);
        p_QPushButton = new QPushButton(this);
    
        p_MainLayOut->addWidget(p_lineEdit, 0, 0);
        p_MainLayOut->addWidget(p_QPushButton, 0, 1);
        connect(p_QPushButton, SIGNAL(clicked()), this, SLOT(ShowFile()));
    }
    
    Login::~Login()
    {
        delete ui;
    }
    
    void Login::ShowFile()
    {
        QString FileName  = QFileDialog::getOpenFileName(0, "打开文件", "", "C++ Files(*.cpp)");
        p_lineEdit->setText(FileName);
    
    }

ui 界面代码

<?xml version="1.0" encoding="UTF-8"?>
    <ui version="4.0">
     <class>MainWindow</class>
     <widget class="QMainWindow" name="MainWindow">
      <property name="geometry">
       <rect>
        <x>0</x>
        <y>0</y>
        <width>898</width>
        <height>563</height>
       </rect>
      </property>
      <property name="windowTitle">
       <string>MainWindow</string>
      </property>
      <widget class="QWidget" name="centralWidget"/>
      <widget class="QMenuBar" name="menuBar">
       <property name="geometry">
        <rect>
         <x>0</x>
         <y>0</y>
         <width>898</width>
         <height>23</height>
        </rect>
       </property>
       <widget class="QMenu" name="menuFile">
        <property name="title">
         <string>File</string>
        </property>
        <addaction name="actionSave"/>
        <addaction name="actionSave_2"/>
        <addaction name="separator"/>
        <addaction name="actionRelogin"/>
       </widget>
       <widget class="QMenu" name="menuClose">
        <property name="title">
         <string>Close</string>
        </property>
        <addaction name="actionClose"/>
       </widget>
       <addaction name="menuFile"/>
       <addaction name="menuClose"/>
      </widget>
      <widget class="QToolBar" name="mainToolBar">
       <attribute name="toolBarArea">
        <enum>TopToolBarArea</enum>
       </attribute>
       <attribute name="toolBarBreak">
        <bool>false</bool>
       </attribute>
      </widget>
      <widget class="QStatusBar" name="statusBar"/>
      <action name="actionSave">
       <property name="text">
        <string>Open</string>
       </property>
      </action>
      <action name="actionSave_2">
       <property name="text">
        <string>Save</string>
       </property>
      </action>
      <action name="actionRelogin">
       <property name="text">
        <string>ReLogin</string>
       </property>
      </action>
      <action name="actionClose">
       <property name="text">
        <string>Close</string>
       </property>
      </action>
     </widget>
     <layoutdefault spacing="6" margin="11"/>
     <resources/>
     <connections/>
    </ui>

mainwindow.ui

<?xml version="1.0" encoding="UTF-8"?>
    <ui version="4.0">
     <class>Login</class>
     <widget class="QDialog" name="Login">
      <property name="geometry">
       <rect>
        <x>0</x>
        <y>0</y>
        <width>400</width>
        <height>300</height>
       </rect>
      </property>
      <property name="windowTitle">
       <string>Dialog</string>
      </property>
      <widget class="QDialogButtonBox" name="buttonBox">
       <property name="geometry">
        <rect>
         <x>30</x>
         <y>240</y>
         <width>341</width>
         <height>32</height>
        </rect>
       </property>
       <property name="orientation">
        <enum>Qt::Horizontal</enum>
       </property>
       <property name="standardButtons">
        <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
       </property>
      </widget>
     </widget>
     <resources/>
     <connections>
      <connection>
       <sender>buttonBox</sender>
       <signal>accepted()</signal>
       <receiver>Login</receiver>
       <slot>accept()</slot>
       <hints>
        <hint type="sourcelabel">
         <x>248</x>
         <y>254</y>
        </hint>
        <hint type="destinationlabel">
         <x>157</x>
         <y>274</y>
        </hint>
       </hints>
      </connection>
      <connection>
       <sender>buttonBox</sender>
       <signal>rejected()</signal>
       <receiver>Login</receiver>
       <slot>reject()</slot>
       <hints>
        <hint type="sourcelabel">
         <x>316</x>
         <y>260</y>
        </hint>
        <hint type="destinationlabel">
         <x>286</x>
         <y>274</y>
        </hint>
       </hints>
      </connection>
     </connections>
    </ui>

最后主函数  main.cpp

#include "mainwindow.h"
    #include <QApplication>
    #include "login.h"
    
    int main(int argc, char *argv[])
    {
        QApplication a(argc, argv);
        MainWindow w;
    
        ///*
        Login * LoginFrm = new Login();
        LoginFrm->setModal(true);
        LoginFrm->show();
        //*/
    
        w.show();
        return a.exec();
    }

![20191025172624526.png][]

运行结果如下

1.显示时间

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyNzc3ODA0_size_16_color_FFFFFF_t_70 1][]

2.退出界面

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyNzc3ODA0_size_16_color_FFFFFF_t_70 2][]

3.产生新窗口 和 上传本地文件

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyNzc3ODA0_size_16_color_FFFFFF_t_70 3][]

自己还是太菜 害

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyNzc3ODA0_size_16_color_FFFFFF_t_70]: /images/20230531/37f062b4c0344f4f8560db4bc1456922.png
[20191025172624526.png]: /images/20230531/1aa010618c5446179a5dbcd3eca743cb.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyNzc3ODA0_size_16_color_FFFFFF_t_70 1]: /images/20230531/5858c26bf5494f968097605d999bb3db.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyNzc3ODA0_size_16_color_FFFFFF_t_70 2]: /images/20230531/9e16fbcbb7504a2d8900030e022fd7b9.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyNzc3ODA0_size_16_color_FFFFFF_t_70 3]: /images/20230531/faa58c0e6cab4711bcbe2985a83a160a.png