DListView_Column:SetFixedWidth works the way I expect but not DListView_Column:SetWidth

[WiZzArD]

What's the deal with setting the width of columns in a DListView? Does the SetFixedWidth method differ from the SetWidth method in argument? I tried some shit but got no results. I am disappoint.

[B]Edit:[/B] Some code for people wanting to see what I mean...

menu_frame = vgui.Create("DFrame")
menu_frame:SetSize(menu_width, menu_height)
menu_frame:Center()
menu_frame:ParentToHUD()
menu_frame:SetDraggable(false)
menu_frame:SetTitle("Buy Menu")
menu_frame:MakePopup()




menu_list = vgui.Create("DListView", menu_frame)
menu_list:StretchToParent(5, 30, 5, 30)
menu_list:AddColumn("ID"):SetFixedWidth(25) -- get rid of Fixed to see GMod not do what I want
menu_list:AddColumn("Name")
menu_list:AddColumn("Price"):SetFixedWidth(45) -- get rid of Fixed to see GMod not do what I want
menu_list:AddLine(1, "Gravity Gun", PRICE_PHYSCANNON)
menu_list:AddLine(2, "9mm Pistol", PRICE_PISTOL)
menu_list:AddLine(3, ".357 Magnum", PRICE_357)
menu_list:AddLine(4, "SMG", PRICE_SMG1)
menu_list:AddLine(5, "Pulse-rifle", PRICE_AR2)
menu_list:AddLine(6, "Shotgun", PRICE_SHOTGUN)
menu_list:AddLine(7, "Crossbow", PRICE_CROSSBOW)
menu_list:AddLine(8, "Grenade", PRICE_GRENADE)
menu_list:AddLine(9, "RPG", PRICE_RPG)
menu_list:AddLine(1, "Gravity Gun", PRICE_PHYSCANNON)
menu_list:AddLine(2, "9mm Pistol", PRICE_PISTOL)
menu_list:AddLine(3, ".357 Magnum", PRICE_357)
menu_list:AddLine(4, "SMG", PRICE_SMG1)
menu_list:AddLine(5, "Pulse-rifle", PRICE_AR2)
menu_list:AddLine(6, "Shotgun", PRICE_SHOTGUN)
menu_list:AddLine(7, "Crossbow", PRICE_CROSSBOW)
menu_list:AddLine(8, "Grenade", PRICE_GRENADE)
menu_list:AddLine(9, "RPG", PRICE_RPG)
menu_list:SetMultiSelect(false)