disable.bas

功能强大的API

'CALL IT LIKE THIS:

    'Call DisableX(Enter Name Of Form Here)
    
Public Declare Function GetSystemMenu Lib "user32" (ByVal hwnd As Long, ByVal bRevert As Long) As Long
Public Declare Function GetMenuItemCount Lib "user32" (ByVal hMenu As Long) As Long
Public Declare Function RemoveMenu Lib "user32" (ByVal hMenu As Long, ByVal nPosition As Long, ByVal wFlags As Long) As Long
Public Declare Function DrawMenuBar Lib "user32" (ByVal hwnd As Long) As Long

Public Const MF_BYPOSITION = &H400&
Public Const MF_DISABLED = &H2&
Public Sub DisableX(Frm As Form)
    Dim hMenu As Long, 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