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Thread: DESPERATE !@&?...... Kill Process under NT

  1. #1

    Thread Starter
    New Member
    Join Date
    Aug 1999
    Posts
    5
    I like to close an application, which is visible in the Task Manager List under Windows NT.
    The problem is, when I load a list of program handles, that application is not in the list.
    How can I close that application ????

    I use the following code to retrieve the list of handles.


    ===============

    Private Declare Function GetWindow Lib "user32" _
    (ByVal hWnd As Long, ByVal wCmd As Long) As Long

    Private Declare Function GetParent Lib "user32" _
    (ByVal hWnd As Long) As Long

    Private Declare Function GetWindowTextLength Lib _
    "user32" Alias "GetWindowTextLengthA" (ByVal hWnd As Long) As Long

    Private Declare Function GetWindowText Lib "user32" _
    Alias "GetWindowTextA" (ByVal hWnd As Long, ByVal _
    lpString As String, ByVal cch As Long) As Long

    Private Declare Function DestroyWindow Lib "user32" (ByVal hWnd As Long) As Long

    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

    Const WM_CLOSE = &H10

    Const GW_HWNDFIRST = 0
    Const GW_HWNDNEXT = 2

    Private Sub Command1_Click()
    LoadTaskList
    End Sub

    Sub LoadTaskList()

    Dim CurrWnd As Long
    Dim Length As Long
    Dim TaskName As String
    Dim Parent As Long
    Dim X As Integer

    List1.Clear
    CurrWnd = GetWindow(Form1.hWnd, GW_HWNDFIRST)

    While CurrWnd <> 0
    Parent = GetParent(CurrWnd)
    Length = GetWindowTextLength(CurrWnd)
    TaskName = Space$(Length + 1)
    Length = GetWindowText(CurrWnd, TaskName, Length + 1)
    TaskName = Left$(TaskName, Len(TaskName) - 1)

    If Length > 0 Then
    If TaskName <> Me.Caption Then
    List1.AddItem TaskName
    End If
    End If
    CurrWnd = GetWindow(CurrWnd, GW_HWNDNEXT)
    DoEvents
    Wend

    End Sub

    Private Sub Command2_Click()
    hWin = FindWindow(vbNullString, List1.Text)
    MsgBox List1.Text

    If hWin <> 0 Then
    MsgBox "Window's hWnd: " & hWin
    Else
    MsgBox "Program not found."
    End If


    PostMessage hWin, WM_CLOSE, 0, 0
    DestroyWindow hWin

    End Sub

  2. #2
    Fanatic Member crispin's Avatar
    Join Date
    Aug 2000
    Location
    2 clicks west of a Quirkafleeg...Cornwall, England
    Posts
    754
    I got this code from allapi.net:
    Code:
    Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As Long, ByVal lpWindowName As Long) As Long
    Private Declare Function GetParent Lib "user32" (ByVal hwnd As Long) As Long
    Private Declare Function SetParent Lib "user32" (ByVal hWndChild As Long, ByVal hWndNewParent As Long) As Long
    Private Declare Function GetWindowThreadProcessId Lib "user32" (ByVal hwnd As Long, lpdwProcessId As Long) As Long
    Private Declare Function GetWindow Lib "user32" (ByVal hwnd As Long, ByVal wCmd As Long) As Long
    Private Declare Function LockWindowUpdate Lib "user32" (ByVal hwndLock As Long) As Long
    Private Declare Function GetDesktopWindow Lib "user32" () As Long
    Private Declare Function DestroyWindow Lib "user32" (ByVal hwnd As Long) As Long
    Private Declare Function TerminateProcess Lib "kernel32" (ByVal hProcess As Long, ByVal uExitCode As Long) As Long
    Private Declare Function GetCurrentProcess Lib "kernel32" () As Long
    Private Declare Function Putfocus Lib "user32" Alias "SetFocus" (ByVal hwnd As Long) As Long
    Const GW_HWNDNEXT = 2
    Dim mWnd As Long
    Function InstanceToWnd(ByVal target_pid As Long) As Long
        Dim test_hwnd As Long, test_pid As Long, test_thread_id As Long
        'Find the first window
        test_hwnd = FindWindow(ByVal 0&, ByVal 0&)
        Do While test_hwnd <> 0
            'Check if the window isn't a child
            If GetParent(test_hwnd) = 0 Then
                'Get the window's thread
                test_thread_id = GetWindowThreadProcessId(test_hwnd, test_pid)
                If test_pid = target_pid Then
                    InstanceToWnd = test_hwnd
                    Exit Do
                End If
            End If
            'retrieve the next window
            test_hwnd = GetWindow(test_hwnd, GW_HWNDNEXT)
        Loop
    End Function
    Private Sub Form_Load()
        'KPD-Team 1999
        'URL: http://www.allapi.net/
        'E-Mail: [email protected]
        Dim Pid As Long
        'Lock the window update
        LockWindowUpdate GetDesktopWindow
        'Execute notepad.Exe
        Pid = Shell("c:\windows\notepad.exe", vbNormalFocus)
        If Pid = 0 Then MsgBox "Error starting the app"
        'retrieve the handle of the window
        mWnd = InstanceToWnd(Pid)
        'Set the notepad's parent
        SetParent mWnd, Me.hwnd
        'Put the focus on notepad
        Putfocus mWnd
        'Unlock windowupdate
        LockWindowUpdate False
    End Sub
    Private Sub Form_Unload(Cancel As Integer)
        'Unload notepad
        DestroyWindow mWnd
        'End this program
        TerminateProcess GetCurrentProcess, 0
    End Sub
    Crispin
    VB6 ENT SP5
    VB.NET
    W2K ADV SVR SP3
    WWW.BLOCKSOFT.CO.UK

    [Microsoft Basic: 1976-2001, RIP]

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