【QT】C++ GUI Qt4 学习笔记2

Go To Cell 利用QT Desinger做好界面后加入的代码有

gotocelldialog.h

#ifndef GOTOCELLDIALOG_H
#define GOTOCELLDIALOG_H

#include <QDialog>
#include "ui_gotocelldialog.h"

class GoToCellDialog : public QDialog, public Ui::GoToCellDialog
{
    Q_OBJECT
public:
    GoToCellDialog(QWidget *parent = 0);
private slots:
    void on_lineEdit_textChanged();
};

#endif // GOTOCELLDIALOG_H

gotocelldialog.cpp

#include <QtGui>

#include "gotocelldialog.h"

GoToCellDialog::GoToCellDialog(QWidget *parent):QDialog(parent)
{
    setupUi(this);
    QRegExp regExp("[A-Za-z][1-9][0-9]{0,2}");
    lineEdit->setValidator(new QRegExpValidator(regExp, this));

    connect(okButton, SIGNAL(clicked()),this, SLOT(accept()));
    connect(cancelButton, SIGNAL(clicked()),this,SLOT(reject()));
}

void GoToCellDialog::on_lineEdit_textChanged()
{
    okButton->setEnabled(lineEdit->hasAcceptableInput());
}

main

#include <QApplication>
#include "gotocelldialog.h"


int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    GoToCellDialog *dialog = new GoToCellDialog;
    dialog->show();

    return a.exec();
}

效果

 

Sort

sortdialog.h

#ifndef SORTDIALOG_H
#define SORTDIALOG_H

#include <QDialog>
#include <ui_sortdialog.h>

class SortDialog: public QDialog, public Ui::SortDialog
{
    Q_OBJECT
public:
    SortDialog(QWidget *parent = 0);
    void setColumnRange(QChar first, QChar last);
};

#endif // SORTDIALOG_H

sortdialog.cpp

#include <QtGui>
#include "sortdialog.h"

SortDialog::SortDialog(QWidget *parent):QDialog(parent)
{
    setupUi(this);
    secondaryGroupBox->hide();
    tertiaryGroupBox->hide();
    layout()->setSizeConstraint(QLayout::SetFixedSize);

    setColumnRange('A','Z');
}

void SortDialog::setColumnRange(QChar first, QChar last)
{
    primaryColumnCombo->clear();
    secondaryColumnCombo->clear();
    tertiaryColumnCombo->clear();

    secondaryColumnCombo->addItem(tr("None"));
    tertiaryColumnCombo->addItem(tr("None"));
    primaryColumnCombo->setMinimumSize(secondaryColumnCombo->sizeHint());

    QChar ch = first;
    while(ch <= last)
    {
        primaryColumnCombo->addItem(QString(ch));
        secondaryColumnCombo->addItem(QString(ch));
        tertiaryColumnCombo->addItem(QString(ch));
        ch = ch.unicode() + 1;
    }
}

main

#include <QApplication>
#include "sortdialog.h"

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    SortDialog *dialog = new SortDialog;
    dialog->setColumnRange('C','F');
    dialog->show();

    return app.exec();
}