Disable Text Box Pop Up Menu

'Add a module to your project (In the menu choose Project -> Add Module, Then click Open)
'Add 1 Text Box to your form.
'Insert this code to the module :

Declare Function CallWindowProc Lib "user32" Alias "CallWindowProcA" _
(ByVal lpPrevWndFunc As Long, ByVal hWnd As Long, ByVal Msg As Long, _
ByVal wParam As Long, ByVal lParam As Long) As Long
Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" _
(ByVal hWnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
Public Const GWL_WNDPROC = -4
Public Const WM_RBUTTONUP = &H205
Public lpPrevWndProc As Long
Private lngHWnd As Long

Public Sub Hook(hWnd As Long)
lngHWnd = hWnd
lpPrevWndProc = SetWindowLong(lngHWnd, GWL_WNDPROC, _
AddressOf WindowProc)
End Sub

Public Sub UnHook()
Dim lngReturnValue As Long
lngReturnValue = SetWindowLong(lngHWnd, GWL_WNDPROC, lpPrevWndProc)
End Sub

Function WindowProc(ByVal hw As Long, ByVal uMsg As Long, ByVal wParam _
As Long, ByVal lParam As Long) As Long
Select Case uMsg
Case WM_RBUTTONUP
'You can put here your own popup menu.
Case Else
WindowProc = CallWindowProc(lpPrevWndProc, hw, uMsg, wParam, lParam)
End Select
End Function

'Insert the following code to your form:

Private Sub Form_Load()
'Replace 'Text1' with the name of your Text Box
Call Hook(Text1.hWnd)
End Sub

Private Sub Form_Unload(Cancel As Integer)
Call UnHook
End Sub