Menutup Seluruh Aplikasi Yang Sedang Berjalan

Di bawah ini merupakan fungsi untuk menutup seluruh aplikasi yang sedang berjalan. Mengapa seluruh aplikasi yang sedang berjalan tersebut harus ditutup? contoh kecilnya dalam pembuatan billing warnet. Misalnya A (user) log-out, kemudian datang B (user baru) log-in, B tidak akan melihat aplikasi-aplikasi yang masih terbuka (kemungkinan lupa ditutup oleh A), karena seluruh aplikasi yang sedang berjalan telah ditutup secara otomatis dengan fungsi di bawah ini.
Mungkin ada pertanyaan, Apakah ditutup dengan software billing warnetnya juga? ya, boleh jika kita mau, bahkan sekalian di shutdown pula.

Option Explicit 
 
Public Declare Function SendMessageTimeout Lib "user32" Alias "SendMessageTimeoutA" (ByVal hwnd As Long, ByVal msg As Long, ByVal wParam As Long, _ 
ByVal lParam As Long, ByVal fuFlags As Long, ByVal uTimeout As Long, lpdwResult As Long) As Long 
Public Declare Function IsWindowVisible& Lib "user32" (ByVal hwnd As Long) 
Public Declare Function IsWindow Lib "user32" (ByVal hwnd As Long) As Long 
Public Declare Function EnumWindows Lib "user32.dll" (ByVal lpEnumFunc As Long, ByVal lParam As Long) As Long 
Public Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA" (ByVal hWnd1 As Long, ByVal hWnd2 As Long, ByVal lpsz1 As   String, ByVal lpsz2 As String) As Long 
Public Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredAccess As Long, ByVal bInheritHandle As Long, ByVal dwProcessId As Long) As Long 
Public Declare Function TerminateProcess& Lib "kernel32" (ByVal hProcess As Long, ByVal uExitCode As Long) 
Public Declare Function GetWindowThreadProcessId Lib "user32" (ByVal hwnd As Long, lpdwProcessId As Long) As Long 
Public Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long 
   
Public Const SMTO_BLOCK = &H1 
Public Const SMTO_ABORTIFHUNG = &H2 
Public Const SC_CLOSE = &HF060& 
Public Const WM_SYSCOMMAND = &H112 
Public Const WM_NULL = &H0 
Public Const PROCESS_ALL_ACCESS = &H1F0FFF 
 
Public HWND_Taskbar As Long 
Public HWND_Desktop As Long 
Public HWND_ExplorerW As Long 
 
Public Function EnumWindowsProc(ByVal hwnd As Long, ByVal lParam As Long) As Long 
 
    Dim lThreadID As Long 
    Dim lPid As Long 
    Dim lHp As Long 
 
    If hwnd <> HWND_Taskbar And hwnd <> HWND_Desktop And hwnd <> HWND_ExplorerW Then 
    lThreadID = GetWindowThreadProcessId(hwnd, lPid) 
        If lThreadID <> App.ThreadID Then 
            If IsWindowVisible(hwnd) Then 
                SendMessageTimeout hwnd, WM_SYSCOMMAND, SC_CLOSE, 0, 0, 500, 0 
                If IsWindow(hwnd) Then 
                      lHp = OpenProcess(PROCESS_ALL_ACCESS, 0&, lPid) 
                    TerminateProcess lHp&, 0& 
                    CloseHandle lHp 
                End If 
            End If 
        End If 
    End If 
 
    EnumWindowsProc = 1 
 
End Function 
 
Public Sub CloseAllRuning() 
    HWND_Desktop = FindWindowEx(0&, 0&, "Progman", vbNullString) 
    HWND_Taskbar = FindWindowEx(0&, 0&, "Shell_TrayWnd", vbNullString) 
    EnumWindows AddressOf EnumWindowsProc, 0&   
End Sub 

Contoh Penggunaan fungsi untuk menutup seluruh aplikasi

Sub Main() 
      Call CloseAllRuning 
End Sub