FindWindow function Question

[LiuMin]

<DllImport("coredll.dll", EntryPoint:="EnableWindow")> _
Private Function EnableWindow( _
ByVal hwnd As IntPtr, _
ByVal bEnable As Boolean) As Boolean
End Function

 

[James McCutcheon]

Is that a code typo or a posting typo because

FindWindow("HHTaskBar", Nothing)

should work.

 

[LiuMin]

Is that a code typo or a posting typo because FindWindow("HHTaskBar",
Nothing) should work.
I don't understand this sentence, why FindWindow("HHTaskBar",Nothing)
should work?
Can you Explain this sentence By more and easiness of word.