When locking a sheet, the VB Code stops working - vb.net

Question

Here is my code; when I lock the sheet the code stops working and will not pop up on the double click.
On another note is there a way to activate the code without requiring it to double click?
Private Sub Worksheet_Activate()
End Sub
'==========================
Private Sub Worksheet_BeforeDoubleClick(ByVal Target As Range, _
Cancel As Boolean)
Dim str As String
Dim cboTemp As OLEObject
Dim ws As Worksheet
Set ws = ActiveSheet
Set cboTemp = ws.OLEObjects("NameBox")
On Error Resume Next
With cboTemp
'clear and hide the combo box
.ListFillRange = ""
.LinkedCell = ""
.Visible = False
End With
On Error GoTo errHandler
If Target.Validation.Type = 3 Then
'if the cell contains a data validation list
Cancel = True
Application.EnableEvents = False
'get the data validation formula
str = Target.Validation.Formula1
str = Right(str, Len(str) - 1)
With cboTemp
'show the combobox with the list
.Visible = True
.Left = Target.Left
.Top = Target.Top
.Width = Target.Width + 5
.Height = Target.Height + 5
.ListFillRange = str
.LinkedCell = Target.Address
End With
cboTemp.Activate
'open the drop down list automatically
Me.NameBox.DropDown
End If
errHandler:
Application.EnableEvents = True
Exit Sub
End Sub
'=========================================
Private Sub Worksheet_SelectionChange(ByVal Target As Range)
Dim str As String
Dim cboTemp As OLEObject
Dim ws As Worksheet
Set ws = ActiveSheet
Application.EnableEvents = False
Application.ScreenUpdating = True
If Application.CutCopyMode Then
'allow copying and pasting on the worksheet
GoTo errHandler
End If
Set cboTemp = ws.OLEObjects("NameBox")
On Error Resume Next
With cboTemp
.Top = 10
.Left = 10
.Width = 0
.ListFillRange = ""
.LinkedCell = ""
.Visible = False
.Value = ""
End With
errHandler:
Application.EnableEvents = True
Exit Sub
End Sub
'====================================
'Optional code to move to next cell if Tab or Enter are pressed
'from code by Ted Lanham
'***NOTE: if KeyDown causes problems, change to KeyUp
Private Sub NameBox_KeyDown(ByVal _
KeyCode As MSForms.ReturnInteger, _
ByVal Shift As Integer)
Select Case KeyCode
Case 9 'Tab
ActiveCell.Offset(0, 1).Activate
Case 13 'Enter
ActiveCell.Offset(1, 0).Activate
Case Else
'do nothing
End Select
End Sub
'====================================