GroupButtonsLayout->addWidget(buttonOk, 0, 0);
GroupButtonsLayout->addItem(new QSpacerItem (20, 20, QSizePolicy::Expanding, QSizePolicy::Minimum), 0, 1);
GroupButtonsLayout->addWidget(buttonOk, 0, 0);
GroupButtonsLayout->addItem(new QSpacerItem (20, 20, QSizePolicy::Expanding, QSizePolicy::Minimum), 0, 1);