Qt学习笔记--对话框

Dialog

#include "mywidget.h"#include "ui_mywidget.h"#include<QDebug>#include<QColorDialog>#include<QFileDialog>#include<QFontDialog>#include<QInputDialog>#include<QMessageBox>#include<QProgressDialog>#include<QErrorMessage>MyWidget::MyWidget(QWidget *parent) :    QWidget(parent),    ui(new Ui::MyWidget){    ui->setupUi(this);  //  errordlg = new QErrorMessage(this);}MyWidget::~MyWidget(){    delete ui;}//颜色对话框void MyWidget::on_pushButton_clicked(){    QColor color =QColorDialog::getColor(Qt::red,this,tr("颜色对话框"),QColorDialog::ShowAlphaChannel);    qDebug()<<"color:"<<color;}//文件对话框void MyWidget::on_pushButton_5_clicked(){    QString filename = QFileDialog::getOpenFileName(this,tr("文件对话框"),"D:",tr("图片文件(*png *jpg)"));    qDebug()<<"filename"<<filename;}//字体对话框void MyWidget::on_pushButton_2_clicked(){    bool ok;    QFont font = QFontDialog::getFont(&ok,this);    if(ok) ui->pushButton_2->setFont(font);    else qDebug()<<tr("没有选择字体");}//输入对话框void MyWidget::on_pushButton_6_clicked(){    bool ok;    QString string = QInputDialog::getText(this,tr("输入字符对话框"),tr("请输入用户名:"),QLineEdit::Normal,tr("admin"),&ok);    if(ok) qDebug()<<"string"<<string;    int value1=QInputDialog::getInt(this,tr("输入整数对话框"),tr("请输入-1000到1000之间的数值"),100,-1000,1000,10,&ok);    if(ok) qDebug()<<"value1:"<<value1;    int value2=QInputDialog::getInt(this,tr("输入浮点数对话框"),tr("请输入-1000到1000之间的数值"),0.00,-1000,1000,2,&ok);    if(ok) qDebug()<<"value2:"<<value2;    QStringList items;    items<<tr("条目1")<<tr("条目2")<<tr("条目3");    QString item = QInputDialog::getItem(this,tr("输入条目对话框"),tr("请选择或者输入一个条目"),items,0,true,&ok);    if(ok) qDebug()<<"item"<<item;}//消息对话框void MyWidget::on_pushButton_3_clicked(){    //问题对话框    int ret1=QMessageBox::question(this,tr("问题对话框"),tr("你了解Qt吗？"),QMessageBox::Yes,QMessageBox::No);    if(ret1==QMessageBox::Yes) qDebug()<<tr("问题!");    //提示对话框    int ret2=QMessageBox::information(this,tr("提示对话框"),tr("这是Qt书籍！"),QMessageBox::Ok);    if(ret2==QMessageBox::Ok) qDebug()<<tr("提示！");    //警告对话框    int ret3=QMessageBox::warning(this,tr("警告对话框"),tr("不能提前结束"),QMessageBox::Abort);    if(ret3==QMessageBox::Abort) qDebug()<<tr("警告！");    //错误对话框    int ret4=QMessageBox::critical(this,tr("错误对话框"),tr("发现一个严重错误！现在要关闭所有文件！"),QMessageBox::YesAll);    if(ret4==QMessageBox::YesAll) qDebug()<<tr("错误！");    //关于对话框    QMessageBox::about(this,tr("关于对话框"),tr("yuanweilin 致力于Qt!"));}//进度对话框void MyWidget::on_pushButton_7_clicked(){    QProgressDialog dialog(tr("文件复制进度"),tr("取消"),0,50000,this);    dialog.setWindowTitle("进度对话框");    dialog.setWindowModality(Qt::WindowModal);    dialog.show();    for(int i=0;i<50000;i++)    {        dialog.setValue(i);        QCoreApplication::processEvents();        if(dialog.wasCanceled()) break;    }        dialog.setValue(50000);        qDebug()<<tr("复制结束！");}/*void MyWidget::on_pushButton_4_clicked(){    errordlg->setWindowTitle(tr("错误信息对话框"));    errordlg->showMessage(tr("这里是出错信息"));}*/