local Window = nil
 local function HelloWorldWindow()
  
  if ( Window ) then Window:SetVisible( true ) return end
  
  Window = vgui.Create( "Frame" )
  Window:SetName( "vgui_hello" )
  
  local button = vgui.Create( "Button", Window, "ClickMe" )
  button:SetActionFunction( ClickHere )
  Window:LoadControlsFromFile( "resource/ui/vgui_hello.res" )
  Window:SetKeyBoardInputEnabled( true )
  Window:SetMouseInputEnabled( true )
 
  Window:SetPos( (ScrW() - 400) / 2, ScrH() - 200 )
  Window:SetVisible( true )
  
 end
 concommand.Add( "test_vgui", HelloWorldWindow )
  
local function ClickHere()
	pl:Give("pb_impulse")
end