Qt中的几种标准对话框使用

颜色对话框

void oneForm::doProcessColorClicked()
{
    QColor color = QColorDialog::getColor(Qt::red,this,"Colorful",QColorDialog::ShowAlphaChannel);
    qDebug()<<"color"<<color;
}

文件对话框

void oneForm::doProcessFileClicked()
{
    QStringList filenames = QFileDialog::getOpenFileNames(this,"文件对话框",
                                "D:","图片文件(*.png *.jpg);;文档(*.pdf)");
    qDebug()<<"filenames"<<filenames;
}

字体对话框

void oneForm::doProcessFontClicked()
{
    bool ok;//定义一个变量,接收用户在打开的字体对话框中选择的是OK还是Cancel
    QFont font = QFontDialog::getFont(&ok,this);
    if(ok)
    {
        ui->btn_front->setFont(font);
    }
    else
    {
        qDebug()<<"未选择字体！";
    }

}

输入对话框

void oneForm::doProcessInputClicked()
{
    bool ok;
    //获取文本
    QString text = QInputDialog::getText(this,"输入对话框","用户名",QLineEdit::Normal,QDir::home().dirName(),&ok);
    if(ok)
    {
        qDebug()<<"text"<<text;
    }
    int value1 = QInputDialog::getInt(this,"输入整型的数字","Int类型",100,-1000,1000,2,&ok);
    if(ok)
    {
        qDebug()<<"value1"<<value1;
    }
    int value2 = QInputDialog::getDouble(this,"输入整型的数字","Double类型",100,-1000,1000,0.1,&ok);
    if(ok)
    {
        qDebug()<<"value2"<<value2;
    }
    QStringList items;
    items<<"张三"<<"王五"<<"李白";
    QString item = QInputDialog::getItem(this,"输入条目对话框","请选择一个条目",items,0,true,&ok);
    if(ok)
    {
        qDebug()<<"item"<<item;
    }
}

消息对话框

void oneForm::doProcessMsgClicked()
{
    int ret1 = QMessageBox::question(this,"问题对话框","你了解我吗？",
                          QMessageBox::Yes,QMessageBox::No);
    if(ret1 == QMessageBox::Yes)
    {
        qDebug()<<"QMessageBox::Yes";
    }
    int ret2 = QMessageBox::information(this,"提示对话框","这是一本计算机的相关书籍。",
                          QMessageBox::Yes,QMessageBox::No);
    if(ret2 == QMessageBox::Yes)
    {
        qDebug()<<"QMessageBox::Yes";
    }
    int ret3 = QMessageBox::warning(this,"警告","不可以跳过这一步哦！",
                          QMessageBox::Abort);
    if(ret3 == QMessageBox::Abort)
    {
        qDebug()<<"QMessageBox::Abort";
    }
    int ret4 = QMessageBox::critical(this,"严重错误对话框","现在关闭所有对话框！",
                          QMessageBox::YesAll);
    if(ret4 == QMessageBox::YesAll)
    {
        qDebug()<<"QMessageBox::YesAll";
    }
    QMessageBox::aboutQt(this,"关于Qt");
}

进度条对话框

void oneForm::doProcessProBarClicked()
{
    QProgressDialog dialog("文件复制进度","取消",0,50000,this);
    dialog.setWindowTitle("进度对话框");
//    dialog.setWindowModality(Qt::NonModal);//非模态
    dialog.setWindowModality(Qt::WindowModal);//模态
    dialog.show();
    for(int i=0;i<50000;i++)
    {
        dialog.setValue(i);
        QCoreApplication::processEvents();//避免界面冻结
        if(dialog.wasCanceled())
        {
            qDebug()<<"文件复制取消";
            return;
        }

    }
    dialog.setValue(50000);
    qDebug()<<"文件复制结束！";
}

错误消息对话框

void oneForm::doProcessErrMsgClicked()
{
    errordig->setWindowTitle("错误消息对话框");
    errordig->showMessage("这是一条错误消息！");
}

向导对话框

void oneForm::doProcessGuideClicked()
{
    QWizard wizard(this);
    wizard.setWindowTitle("向导对话框");
    wizard.addPage(createPage1());//将创建的3个向导页面分别加入
    wizard.addPage(createPage2());
    wizard.addPage(createPage3());
    wizard.exec();
}

QWizardPage *oneForm::createPage1()
{
    QWizardPage *page=new QWizardPage(this);
    page->setTitle("介绍");
//    page->setPixmap(QWizard::BackgroundPixmap,QPixmap(":/new/prefix1/ches02.jpg"));
    return page;
}

QWizardPage *oneForm::createPage2()
{
    QWizardPage *page=new QWizardPage(this);
    page->setTitle("用户选择信息");
    return page;
}

QWizardPage *oneForm::createPage3()
{
    QWizardPage *page=new QWizardPage(this);
    page->setTitle("结束");
    return page;
}


private:
    QWizardPage *createPage1();//创建3个向导页面的函数
    QWizardPage *createPage2();
    QWizardPage *createPage3();