show/hide systray clock

[wey97]

What API calls can be used to show/hide the systray
clock if it is not showing as if you right click on the
taskbar, click Properties, and uncheck Show Clock?

This code does not work:

lHwnd = FindWindowEx(0, 0, "Shell_TrayWnd", vbNullString)
lHwnd = FindWindowEx(lHwnd, 0, "TrayNotifyWnd", vbNullString)
lHwnd = FindWindowEx(lHwnd, 0, "TrayClockWClass", vbNullString)
Call ShowWindow(lHwnd, 5)