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.
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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
