local frame = vgui.Create("DFrame")
frame:SetSize(200,200)
frame:Center()

local textentry = vgui.Create("TextEntry", frame)
textentry:SetMultiline(true)
textentry:SetText("æøå")
textentry:SetSize(100, 100)
textentry:CenterVertical()
textentry:CenterHorizontal()

frame:MakePopup()