一句话问题：如何防止VB程序被强行关闭？

我要代码和那个原理介绍 谢谢

Function CheckApplicationIsRun(ByVal szExeFileName As String) As Boolean
On Error GoTo Err
Dim WMI
Dim Obj
Dim Objs
CheckApplicationIsRun = False
Set WMI = GetObject("WinMgmts:")
Set Objs = WMI.InstancesOf("Win32_Process")
For Each Obj In Objs
If InStr(UCase(szExeFileName), UCase(Obj.Description)) <> 0 Then
CheckApplicationIsRun = True
If Not Objs Is Nothing Then Set Objs = Nothing
If Not WMI Is Nothing Then Set WMI = Nothing
Exit Function
End If
Next
If Not Objs Is Nothing Then Set Objs = Nothing
If Not WMI Is Nothing Then Set WMI = Nothing
Exit Function
Err:
If Not Objs Is Nothing Then Set Objs = Nothing
If Not WMI Is Nothing Then Set WMI = Nothing
End Function Private Sub Form_Load()
If CheckApplicationIsRun("abc.exe") = True Then
Else
Shell "C：\abc.exe" End If双进程互保，不懂追问
End Sub

msgbox "i love this game!"