Qt学习笔记-各种对话框基本使用

运行图如下：

文件结构如下：

代码如下：

mainwindow.h

#ifndef MAINWINDOW_H

#define MAINWINDOW_H

#include <QMainWindow>

#include <QAction>

#include <QMenuBar>

#include <QFontDialog>

#include <QMenu>

#include <QCoreApplication>

#include <QList>

#include <QColor>

#include <QDebug>

#include <QColorDialog>

#include <QFileDialog>

#include <QProgressDialog>

#include <QInputDialog>

#include <QMessageBox>

#include <QProgressDialog>

#include <QWizard>

class MainWindow : public QMainWindow

{

    Q_OBJECT

public:

    MainWindow(QWidget *parent = 0);

    ~MainWindow();

public slots:

    void colorTriggered();

    void fileTriggered();

    void fontTriggered();

    void inputTriggered();

    void msgTriggered();

    void progressTriggered();

    void errMsgTriggered();

    void wizardTriggered();

private:

    QMenuBar *m_menubar;

    QMenu *m_dialogMenu;

    QAction m_color;

    QAction m_file;

    QAction m_font;

    QAction m_input;

    QAction m_msg;

    QAction m_progress;

    QAction m_errMsg;

    QAction m_wizard;

};

#endif // MAINWINDOW_H

mainwindow.cpp

#include "mainwindow.h"

MainWindow::MainWindow(QWidget *parent)

    : QMainWindow(parent)

{

    m_menubar=this->menuBar();

    m_dialogMenu=new QMenu(tr("对话框"));

    m_color.setText(tr("颜色对话框"));

    m_file.setText(tr("文件对话框"));

    m_font.setText(tr("字体对话框"));

    m_input.setText(tr("输入对话框"));

    m_msg.setText(tr("消息对话框"));

    m_progress.setText(tr("进度对话框"));

    m_errMsg.setText(tr("错误信息对话框"));

    m_wizard.setText(tr("向导对话框"));

    m_dialogMenu->addAction(&m_color);

    m_dialogMenu->addAction(&m_file);

    m_dialogMenu->addAction(&m_font);

    m_dialogMenu->addAction(&m_input);

    m_dialogMenu->addAction(&m_msg);

    m_dialogMenu->addAction(&m_progress);

    m_dialogMenu->addAction(&m_errMsg);

    m_dialogMenu->addAction(&m_wizard);

    m_menubar->addMenu(m_dialogMenu);

    connect(&m_color,SIGNAL(triggered(bool)),this,SLOT(colorTriggered()));

    connect(&m_file,SIGNAL(triggered(bool)),this,SLOT(fileTriggered()));

    connect(&m_font,SIGNAL(triggered(bool)),this,SLOT(fontTriggered()));

    connect(&m_input,SIGNAL(triggered(bool)),this,SLOT(inputTriggered()));

    connect(&m_msg,SIGNAL(triggered(bool)),this,SLOT(msgTriggered()));

    connect(&m_progress,SIGNAL(triggered(bool)),this,SLOT(progressTriggered()));

    connect(&m_errMsg,SIGNAL(triggered(bool)),this,SLOT(errMsgTriggered()));

    connect(&m_wizard,SIGNAL(triggered(bool)),this,SLOT(wizardTriggered()));

}

void MainWindow::colorTriggered(){

    QColor color=QColorDialog::getColor(Qt::red,this,tr("颜色对话框"));

    qDebug()<<"color:"<<color;

}

void MainWindow::fileTriggered(){

    QString fileName=QFileDialog::getOpenFileName(this,tr("文件对话框"),"D:",tr("图片文件(*png *jpg)"));

    qDebug()<<"fileName:"<<fileName;

}

void MainWindow::fontTriggered(){

    bool ok;

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

    qDebug()<<font;

}

void MainWindow::inputTriggered(){

    bool ok;

    QString text=QInputDialog::getText(this,tr("输入对话框"),tr("输入内容"),QLineEdit::Normal,tr("输入的内容"),&ok);

    qDebug()<<text;

}

void MainWindow::msgTriggered(){

    QMessageBox::information(this,tr("消息对话框"),tr("消息提示"));

}

void MainWindow::progressTriggered(){

    QProgressDialog pd(tr("进度"),tr("取消"),0,50000,this);

    pd.setWindowTitle("进度对话框");

    pd.setWindowModality(Qt::WindowModal);

    pd.show();

    for(int i=0;i<50000;i++){

        pd.setValue(i);

        QCoreApplication::processEvents();

        if(pd.wasCanceled())break;

    }

}

void MainWindow::errMsgTriggered(){

    QMessageBox::critical(this,tr("错误信息对话框"),tr("错误信息提示"));

}

void MainWindow::wizardTriggered(){

    QWizard wizard;

    wizard.setWindowTitle(tr("向导对话框"));

    wizard.exec();

}

MainWindow::~MainWindow()

{

}

main.cpp

#include "mainwindow.h"

#include <QApplication>

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

{

    QApplication a(argc, argv);

    MainWindow w;

    w.show();

    return a.exec();

}