去掉窗体的关闭按钮

　　Private Declare Function GetSystemMenu Lib "User32" (ByVal hwnd As Long, ByVal bRevert 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 Declare Function GetMenuItemCount Lib "User32" (ByVal hMenu As Long) As Long

　　Private Const MF_BYPOSITION = &H400&

　　Private Const MF_DISABLED = &H2&

　　

　　Private Sub Form_Load()

　　Call DisableX(Me)

　　End Sub

　　

　　Private 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