使用以下功能来实现窗口台和桌面功能：
CloseDesktop
CloseWindowStation
CreateDesktop
CreateWindowStation
EnumDesktopProc
EnumDesktops
EnumDesktopWindows
EnumWindowStationProc
EnumWindowStations
GetProcessWindowStation
GetThreadDesktop
GetUserObjectInformation
GetUserObjectSecurity
OpenDesktop
OpenInputDesktop
OpenWindowStation
SetProcessWindowStation
SetThreadDesktop
SetUserObjectInformation
SetUserObjectSecurity
SwitchDesktop
