I've found a script for DzTabWidget. Perhaps it is required someone.
wDlg = new DzDialog;
wTabStack = new DzTabWidget( wDlg );
wOptionPage = new DzVGroupBox( wTabStack );
wPrefsPage = new DzVGroupBox( wTabStack );
var wDlgLayout = new DzGridLayout( wDlg );
wDlgLayout.addMultiCellWidget( wTabStack, 0, 1, 0, 0 );
var wDlgBtnsGB = new DzGroupBox( wDlg );
wDlgBtnsGB.flat = true;
var wDlgBtnsLyt = new DzGridLayout( wDlgBtnsGB );
wDlgBtnsLyt.setColStretch( 1, 1 );
wDlgLayout.addMultiCellWidget( wDlgBtnsGB,1, 1,0, 0 );
wOptionPage.flat = true;
wTabStack.addTab( wOptionPage, "1 page" );
wPrefsPage.flat = true;
wTabStack.addTab( wPrefsPage, "2 page" );
wDlg.maxWidth = wDlg.minWidth;
wDlg.maxHeight = wDlg.minHeight;
wDlg.exec()