Kill a Program Process

By | 2019-09-25

This will allow you kill running tasks or processes, provided the account you are running it under has the permissions to do so.

This could be useful if you want to write your own version of Task Manager.

'-------------------------------------------------------
Type PROCESSENTRY32
    dwSize As Long
    cntUsage As Long
    th32ProcessID As Long
    th32DefaultHeapID As Long
    th32ModuleID As Long
    cntThreads As Long
    th32ParentProcessID As Long
    pcPriClassBase As Long
    dwFlags As Long
    szexeFile As String * 260
End Type
'-------------------------------------------------------
Declare Function OpenProcess Lib "kernel32.dll" (ByVal dwDesiredAccess As Long, _
ByVal blnheritHandle As Long, ByVal dwAppProcessId As Long) As Long

Declare Function ProcessFirst Lib "kernel32.dll" Alias "Process32First" (ByVal hSnapshot As Long, _
uProcess As PROCESSENTRY32) As Long

Declare Function ProcessNext Lib "kernel32.dll" Alias "Process32Next" (ByVal hSnapshot As Long, _
uProcess As PROCESSENTRY32) As Long

Declare Function CreateToolhelpSnapshot Lib "kernel32.dll" Alias "CreateToolhelp32Snapshot" ( _
ByVal lFlags As Long, lProcessID As Long) As Long

Declare Function TerminateProcess Lib "kernel32.dll" (ByVal ApphProcess As Long, _
ByVal uExitCode As Long) As Long

Declare Function CloseHandle Lib "kernel32.dll" (ByVal hObject As Long) As Long

'-------------------------------------------------------
Public Sub KillProcess(NameProcess As String)
Const PROCESS_ALL_ACCESS = &H1F0FFF
Const TH32CS_SNAPPROCESS As Long = 2&
Dim uProcess As PROCESSENTRY32
Dim RProcessFound As Long
Dim hSnapshot As Long
Dim SzExename As String
Dim ExitCode As Long
Dim MyProcess As Long
Dim AppKill As Boolean
Dim AppCount As Integer
Dim i As Integer
Dim WinDirEnv As String
        
     If NameProcess <> "" Then
         AppCount = 0

         uProcess.dwSize = Len(uProcess)
         hSnapshot = CreateToolhelpSnapshot(TH32CS_SNAPPROCESS, 0&)
         RProcessFound = ProcessFirst(hSnapshot, uProcess)

         Do
            i = InStr(1, uProcess.szexeFile, Chr(0))
            SzExename = LCase$(Left$(uProcess.szexeFile, i - 1))
            WinDirEnv = Environ("Windir") + "\"
            WinDirEnv = LCase$(WinDirEnv)
        
            If Right$(SzExename, Len(NameProcess)) = LCase$(NameProcess) Then
             AppCount = AppCount + 1
             MyProcess = OpenProcess(PROCESS_ALL_ACCESS, False, uProcess.th32ProcessID)
             AppKill = TerminateProcess(MyProcess, ExitCode)
             Call CloseHandle(MyProcess)
            End If
            RProcessFound = ProcessNext(hSnapshot, uProcess)
         Loop While RProcessFound
         Call CloseHandle(hSnapshot)
     End If

End Sub

Author: dwirch

Derek Wirch is a seasoned IT professional with an impressive career dating back to 1986. He brings a wealth of knowledge and hands-on experience that is invaluable to those embarking on their journey in the tech industry.

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