// ui_MyDialog.h

namespace Ui {
public:
  QVBoxLayout *vboxLayout;
  QPushButton *okBtn;
  QPushButton *cancelBtn;
  ...
  inline void setupUi(QDialog* dialog);
  inline void retranslateUi(QDialog* dialog);
}

inline void MyDialog::setupUi(QDialog *dialog)
{
  dialog->resize(QSize(400, 300).expandedTo(dialog->minimumSizeHint()));
  dialog->setObjectName(QString::fromUtf8("AboutDialog"));
  vboxLayout = new QVBoxLayout(dialog);
  vboxLayout->setObjectName(QString::fromUtf8("unnamed"));
  vboxLayout->setResizeMode(QLayout::Minimum);
  ...
}

inline void MyDialog::retranslateUi(QDialog *dialog)
{
  dialog->setWindowTitle(QApplication::translate("AboutDialog");
  ...
}