去关闭按钮.txt

去关闭按钮. vb的编程很实用的一段程序.

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