finddialog.cpp Example File

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  #include <QtWidgets>
  #include "finddialog.h"

  FindDialog::FindDialog(QWidget *parent)
      : QDialog(parent)
  {
      QLabel *findLabel = new QLabel(tr("Enter the name of a contact:"));
      lineEdit = new QLineEdit;

      findButton = new QPushButton(tr("&Find"));
      findText = "";

      QHBoxLayout *layout = new QHBoxLayout;
      layout->addWidget(findLabel);
      layout->addWidget(lineEdit);
      layout->addWidget(findButton);

      setLayout(layout);
      setWindowTitle(tr("Find a Contact"));
      connect(findButton, SIGNAL(clicked()), this, SLOT(findClicked()));
      connect(findButton, SIGNAL(clicked()), this, SLOT(accept()));
  }
  void FindDialog::findClicked()
  {
      QString text = lineEdit->text();

      if (text.isEmpty()) {
          QMessageBox::information(this, tr("Empty Field"),
              tr("Please enter a name."));
          return;
      } else {
          findText = text;
          lineEdit->clear();
          hide();
      }
  }
  QString FindDialog::getFindText()
  {
      return findText;
  }