Qt4 Dialog Class (C++)

finddialog.h

/* finddialog.h*/#ifndef FINDDIALOG_H#define FINDDIALOG_H#include <QDialog>class QCheckBox;class QLabel;class QLineEdit;class QPushButton;class FindDialog:public QDialog{ Q_OBJECTpublic: FindDialog(QWidget *parent=0);signals: void findext(const QString &str,Qt::CaseSensitivity cs); void findePrevious(const QString &str,Qt::CaseSensitivity cs);private slots: void findClicked(); void enableFindButton(const QString &text);private: QLabel *label; QLineEdit *lineEdit; QCheckBox *caseCheckBox; QCheckBox *backwardCheckBox; QPushButton *findButton; QPushButton *closeButton;};#endif

finddialog.cpp

/* finddialog.cpp*/#include <QtGui>#include"finddialog.h"FindDialog::FindDialog(QWidget *parent):QDialog(parent){ 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(enableFindButton(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 FindDialog::findClicked() { QString text=lineEdit->text(); Qt::CaseSensitivity cs=caseCheckBox->isChecked()?Qt::CaseSensitive:Qt::CaseInsensitive; if(backwardCheckBox->isChecked()){ emit findePrevious(text,cs); }else{ emit findext(text,cs); } } void FindDialog::enableFindButton(const QString &text) { findButton->setEnabled(!text.isEmpty()); }

main.cpp

/* main.cpp*/#include <QApplication>#include <finddialog.h>int main(int argc, char **argv){ QApplication app(argc,argv); FindDialog *dialog=new FindDialog(); dialog->show(); return app.exec();}