DNumSlider

 
local DermaPanel = vgui.Create( "DFrame" )
DermaPanel:SetPos( 50,50 )
DermaPanel:SetSize( 200, 250 )
DermaPanel:SetTitle( "Testing Derma Stuff" )
DermaPanel:SetVisible( true )
DermaPanel:SetDraggable( true )
DermaPanel:ShowCloseButton( true )
DermaPanel:MakePopup()
 
local NumSlider = vgui.Create( "DNumSlider", DermaPanel )
NumSlider:SetPos( 25,50 )
NumSlider:SetWide( 150 )
NumSlider:SetText( "Max Props" )
NumSlider:SetMin( 0 ) -- Minimum number of the slider
NumSlider:SetMax( 256 ) -- Maximum number of the slider
NumSlider:SetDecimals( 0 ) -- Sets a decimal. Zero means it's a whole number
NumSlider:SetConVar( "sbox_maxprops" ) -- Set the convar