Below you'll find the source for the Visual Basic 6 function KillProcess.
Attribute VB_Name = "modKillProcess"
' This function is downloaded from:
' http://www.stefanthoolen.nl/archive/vb6-functions/
'
' You may freely distribute this file but please leave all comments, including this one, in it.
'
' @Author Stefan Thoolen <mail@stefanthoolen.nl>
Option Explicit
Private Declare Function TerminateProcess Lib "kernel32" (ByVal hProcess As Long, ByVal uExitCode As Long) As Long
Private Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredAccess As Long, ByVal bInheritHandle As Long, ByVal dwProcessId As Long) As Long
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long
''
' Closes a process
' @param long processId The ID of the process that needs to be closed
' @param long ExitCode Optional, sends this value to the process that's getting killed
' @return boolean True if the process is succesfully terminated, false if not
' @author Stefan Thoolen <mail@stefanthoolen.nl>
Public Function KillProcess(processId As Long, Optional ByVal ExitCode As Long = 0) As Boolean
Dim handle As Long, l As Long
handle = OpenProcess(&H1, False, processId)
If handle = 0 Then Exit Function
l = TerminateProcess(handle, ExitCode)
CloseHandle handle
If l = 0 Then Exit Function
KillProcess = True
End Function