adddialog.cpp Example File

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 #include "adddialog.h"

 #include <QtWidgets>

 AddDialog::AddDialog(QWidget *parent)
     : QDialog(parent)
 {
     nameLabel = new QLabel("Name");
     addressLabel = new QLabel("Address");
     okButton = new QPushButton("OK");
     cancelButton = new QPushButton("Cancel");

     nameText = new QLineEdit;
     addressText = new QTextEdit;

     QGridLayout *gLayout = new QGridLayout;
     gLayout->setColumnStretch(1, 2);
     gLayout->addWidget(nameLabel, 0, 0);
     gLayout->addWidget(nameText, 0, 1);

     gLayout->addWidget(addressLabel, 1, 0, Qt::AlignLeft|Qt::AlignTop);
     gLayout->addWidget(addressText, 1, 1, Qt::AlignLeft);

     QHBoxLayout *buttonLayout = new QHBoxLayout;
     buttonLayout->addWidget(okButton);
     buttonLayout->addWidget(cancelButton);

     gLayout->addLayout(buttonLayout, 2, 1, Qt::AlignRight);

     QVBoxLayout *mainLayout = new QVBoxLayout;
     mainLayout->addLayout(gLayout);
     setLayout(mainLayout);

     connect(okButton, &QAbstractButton::clicked, this, &QDialog::accept);
     connect(cancelButton, &QAbstractButton::clicked, this, &QDialog::reject);

     setWindowTitle(tr("Add a Contact"));
 }