shutdown.frm

WinCC 污水处理系统源程序.里面包含了许多VB6制作的功能组件.很有参考意义.

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   3195
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4680
   LinkTopic       =   "Form1"
   ScaleHeight     =   3195
   ScaleWidth      =   4680
   StartUpPosition =   3  '窗口缺省
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Private Declare Function PostMessage Lib "user32" Alias "PostMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Dim winHWND As Long
Dim retVal As Long

Private Sub Command1_Click()


End Sub

Private Sub Form_Load()
winHWND = FindWindow(vbNullString, "PLC4")
If winHWND <> 0 Then
    retVal = PostMessage(winHWND, &H10, 0&, 0&)
    If retVal = 0 Then
        MsgBox "there is an error in closing the program"
    End If
Else
    MsgBox "the program is not running"
End If
End Sub