UnhookWindowsHookEx
UninstallColorProfile
UnionRect
UnloadKeyboardLayout
UnlockFile
UnlockFileEx
UnlockServiceDatabase
UnmapViewOfFile
UnrealizeObject
UnregisterClass
UnregisterCMM
UnregisterDeviceNotification
UnregisterHotKey
UpdateColors
UpdateICMRegKey
UpdateLayeredWindow
UserHandleGrantAccess