Conflict in Setfocus with ZOrder

[reyboysapphire84]

I have a module named: MGlobals in here i declare a variable

General Declarations

Option Explicit
Public g_FocusMe As Boolean

then I have a MDIParent Named: mdiMMC here i declare the code:
-------------------------------------------------
Private Sub MDIForm_Activate()

If g_FocusMe = True Then
On Error Resume Next
frmMMCModuleNavigator.tvwssMenu.SetFocus
g_FocusMe = False
End If

End Sub
------------------------------------------------
Private Sub MDIForm_Deactivate()
g_FocusMe = True
End Sub
------------------------------------------------

Then I have a form named: frmMMCModuleNavigator

Private Sub tvwssMenu_DblClick()
Form1.Show
End Sub

This module navigator have a treeview that has a list of forms that when you lick the list, the MDIChild would appear.

Then in my MDI Child I declare the code:

Private Sub Form_Activate()
g_FocusMe = False
Me.ZOrder 0
End Sub
------------------------------------------------
Private Sub Form_Load()
g_FocusMe = False
End Sub
------------------------------------------------

When I click the form it would appear and the focus of the cursor is on the form, then i would click another form from the module navigator it would appear also but when I go back from the previously access form the cursor did not focus on that form but instead it focuses on the module navigator form. Please help me on this.