article

_Disable X button on form

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Submitted on: 2/3/2015 10:22:00 PM
By: Petko Petkov (from psc cd)  
Level: Intermediate
User Rating: By 6 Users
Compatibility: VB 6.0
Views: 643
 
     _Disable X button on form

 
				Private Declare Function GetSystemMenu 
Lib "user32" (ByVal hwnd As 
Long, ByVal bRevert 
As Long) As Long
Private Declare Function GetMenuItemCount Lib "user32" (ByVal hMenu As Long) As Long
Private Declare Function RemoveMenu Lib "user32" (ByVal hMenu As Long, ByVal nPosition As Long, ByVal wFlags As Long) As Long
Private Declare Function DrawMenuBar Lib "user32" (ByVal hwnd As Long) As Long
Private Const MF_BYPOSITION = &H400&
Private Const MF_DISABLED = &H2&

Public Sub DisableX(Frm As Form)
Dim hMenu As Long
Dim nCount As Long
  hMenu = GetSystemMenu(Frm.hwnd, 0)
  nCount = GetMenuItemCount(hMenu)
  Call RemoveMenu(hMenu, nCount - 1, MF_DISABLED Or MF_BYPOSITION)
  DrawMenuBar Frm.hwnd
End Sub

Private Sub Command1_Click()
  DisableX Me
End Sub


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