[zork]

*edit* Got it working.

This creates a unit button for "player" that can be hovered, left and rightclicked.

    local orb1 = create_me_a_frame("Button",nil,orbanchorframe,"BACKGROUND",orbsize,orbsize,orbpoint,orbposx,orbposy,orbscale,nil,"SecureUnitButtonTemplate")
    orb1:RegisterForClicks("AnyUp")
    orb1:SetAttribute("unit", "player")
    orb1:SetAttribute("*type1", "target")
    local showmenu = function() 
      ToggleDropDownMenu(1, nil, PlayerFrameDropDown, "cursor", 0, 0) 
    end
    orb1.showmenu = showmenu
    orb1.unit = "player"
    orb1:SetAttribute("*type2", "showmenu")
    orb1:SetScript("OnEnter", UnitFrame_OnEnter)
    orb1:SetScript("OnLeave", UnitFrame_OnLeave)