Creating Dialogs

 1 #ifndef DIALOG_H
 2 #define DIALOG_H
 3 
 4 #include <QtWidgets>
 5 //#include <QDialog>
 6 //#include <QLabel>
 7 //#include <QCheckBox>
 8 //#include <QLineEdit>
 9 //#include <QPushButton>
10 //#include <QtCore>
11 namespace Ui {
12 class Dialog;
13 }
14 
15 class Dialog : public QDialog
16 {
17     Q_OBJECT
18 
19 public:
20     explicit Dialog(QWidget *parent = 0);
21     ~Dialog();
22 
23 signals:
24     void FindNext(const QString &str, Qt::CaseSensitivity cs);
25     void FindPre (const QString &str, Qt::CaseSensitivity cs);
26 
27 private slots:
28     void FindClicked();
29     void EnabledFindButton(const QString &text);
30 
31 private:
32     Ui::Dialog *ui;
33     QLabel *label;
34     QLineEdit *lineEdit;
35     QCheckBox *caseCheckBox;
36     QCheckBox *backwardCheckBox;
37     QPushButton *findButton;
38     QPushButton *closeButton;
39 };
40 
41 #endif // DIALOG_H

#include "dialog.h"
#include "ui_dialog.h"

Dialog::Dialog(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::Dialog)
{
    ui->setupUi(this);
    label = new QLabel(tr("Find &what:"));
    lineEdit = new QLineEdit;
    label->setBuddy(lineEdit);

    caseCheckBox = new QCheckBox(tr("Match &case"));
    backwardCheckBox = new QCheckBox(tr("search &backward"));

    findButton = new QPushButton(tr("&Find"));
    findButton->setDefault(true);
    findButton->setEnabled(false);

    closeButton = new QPushButton(tr("Close"));

    connect(lineEdit,SIGNAL(textChanged(const QString &)),this,SLOT(EnabledFindButton(const QString &)));
    connect(findButton,SIGNAL(clicked()),this,SLOT(FindClicked()));
    connect(closeButton,SIGNAL(clicked()),this,SLOT(close()));

    QHBoxLayout *topLeftLayout = new QHBoxLayout;
    topLeftLayout->addWidget(label);
    topLeftLayout->addWidget(lineEdit);

    QVBoxLayout *leftLayout = new QVBoxLayout;
    leftLayout->addLayout(topLeftLayout);
    leftLayout->addWidget(caseCheckBox);
    leftLayout->addWidget(backwardCheckBox);

    QVBoxLayout *rightLayout = new QVBoxLayout;
    rightLayout->addWidget(findButton);
    rightLayout->addWidget(closeButton);
    rightLayout->addStretch();

    QHBoxLayout *mainLayout = new QHBoxLayout;
    mainLayout->addLayout(leftLayout);
    mainLayout->addLayout(rightLayout);
    setLayout(mainLayout);

    setWindowTitle(tr("Find"));
    setFixedHeight(sizeHint().height());
}
void Dialog::FindClicked()
{
    QString text = lineEdit->text();
    Qt::CaseSensitivity cs = caseCheckBox->isChecked() ? Qt::CaseSensitive : Qt::CaseInsensitive;
    if(backwardCheckBox->isChecked())
    {
        emit FindPre(text,cs);
    }
    else
        emit FindNext(text,cs);

}

void Dialog::EnabledFindButton(const QString &text)
{
    findButton->setEnabled(!text.isEmpty());
}

Dialog::~Dialog()
{
    delete ui;
}

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

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Dialog w;
    w.show();

    return a.exec();
}