Try this:
VB Code:
Public Const SWP_HIDEWINDOW = &H80
Public Const SWP_SHOWWINDOW = &H40
Public Declare Function FindWindow Lib "user32" _
Alias "FindWindowA" (ByVal lpClassName As String, _
ByVal lpWindowName As String) As Long
Public Declare Function SetWindowPos Lib "user32" _
(ByVal hwnd As Long, ByVal hWndInsertAfter As Long, _
ByVal x As Long, ByVal y As Long, ByVal cx As Long, _
ByVal cy As Long, ByVal wFlags As Long) As Long
Private Sub Command1_Click()
Dim Thwnd as Long
Thwnd = FindWindow("Shell_traywnd", "")
Call SetWindowPos(Thwnd, 0, 0, 0, 0, 0, SWP_HIDEWINDOW)
End Sub
Private Sub Command2_Click()
Dim Thwnd as Long
Thwnd = FindWindow("Shell_traywnd", "")
Call SetWindowPos(Thwnd, 0, 0, 0, 0, 0, SWP_SHOWWINDOW)
End Sub