Qt--- create dialog box 3: implementation of shape variable dialog box

occasionally , Different content needs to be displayed to different users , That is, advanced users have advanced model selection display .

such as , Implement the following extended dialog box

1. use QT desinger Create a dialog box and add elements , Here's the picture

Be careful moreButton, Of checkable Property check , as follows ,

 

2. Establish signal slot mechanism , as follows ,

1） add to OK, Cancel The signal slot

 

2） Similar additions moreButton With the display of two combo boxes

Last , The display signal slot is set as follows ,

 3. main.cpp

#include "sortdialog.h"

#include <QApplication>

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

{
  

    QApplication a(argc, argv);

    SortDialog *sortDlg = new SortDialog;

    sortDlg->setColumnRange('C','F');

    sortDlg->show();

    return a.exec();

}

4. sortdialog.h

#ifndef SORTDIALOG_H

#define SORTDIALOG_H

#include <QDialog>

namespace Ui {
  

class SortDialog;

}

class SortDialog : public QDialog

{
  

    Q_OBJECT

public:

    explicit SortDialog(QWidget *parent = nullptr);

    ~SortDialog();

    void setColumnRange(QChar first, QChar last);

private:

    Ui::SortDialog *ui;

};

#endif // SORTDIALOG_H

5. sortdialog.cpp

#include "sortdialog.h"

#include "ui_sortdialog.h"

SortDialog::SortDialog(QWidget *parent) :

    QDialog(parent),

    ui(new Ui::SortDialog)

{
  

    ui->setupUi(this);

    ui->secondaryGroupBox->hide();

    ui->tertiaryGroupBox->hide();

    layout()->setSizeConstraint(QLayout::SetFixedSize);

    setColumnRange('A', 'Z');

}

SortDialog::~SortDialog()

{
  

    delete ui;

}

void SortDialog::setColumnRange(QChar first, QChar last)

{
  

    ui->primaryColumnCombo->clear();

    ui->secondaryColumnCombo->clear();

    ui->tertiaryColumnCombo->clear();

    ui->secondaryColumnCombo->addItem(tr("None"));

    ui->tertiaryColumnCombo->addItem(tr("None"));

    ui->primaryColumnCombo->setMinimumSize(

                ui->secondaryColumnCombo->sizeHint());

    QChar ch = first;

    while(ch <= last) {
  

        ui->primaryColumnCombo->addItem(QString(ch));

        ui->secondaryColumnCombo->addItem(QString(ch));

        ui->tertiaryColumnCombo->addItem(QString(ch));

        ch = ch.unicode() + 1;

    }

}