AddXTab
BReference<XTab> AddXTab();
currentRight = layout->AddXTab();
fLeft = AddXTab();
fRight = AddXTab();
tabs[i] = AddXTab();
left = AddXTab();
right = AddXTab();
right = AddXTab();
left = AddXTab();
left = fLayout->AddXTab();
right = fLayout->AddXTab();
left = fLayout->AddXTab();
right = fLayout->AddXTab();
fLayout->AddXTab())
layout->AddXTab())