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TechHome

• Command Line Parameter Handling
• Current Process Parent Process id
• Determine the Fully-pathed EXE Associated with the NT Window
• Enumerating Process Objects
• Get a Processes EXE Name
• Get Information About Parent Process
• GetExeData UDF
• GetProcessTimes
• Run EXE No Focus
• Set Current Process Affinity
• UDF for Using Memory Mapped Files for Interprocess Communication

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Current Process Parent Process id

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Keywords: current processes parent process id proc procid

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This script makes use of one of the Win32 Kernel API functions to obtain the current process' parent process id number. The parent process' id can then be used to get information about the parent process.

#DefineFunction udfGetMyParentProcId()

   ; Get a pseudo-handle to our own process.
   hMyProc = DllCall('KERNEL32.DLL',long:'GetCurrentProcess')

   ; Set up the input parameters for ZwQueryInformationProcess().
   nProcInfoBufSize = 6 * 4
   hProcInfoBuf = BinaryAlloc(nProcInfoBufSize)
   ProcessBasicInformation = 0
   Result = DllCall('NTDLL.DLL',long:'ZwQueryInformationProcess',long:hMyProc,long:ProcessBasicInformation,lpbinary:hProcInfoBuf,long:nProcInfoBufSize,lpnull)
   BinaryEodSet(hProcInfoBuf,nProcInfoBufSize)
   nMyProcId = BinaryPeek4(hProcInfoBuf,16)
   nMyParentProcId = BinaryPeek4(hProcInfoBuf,20)

   ; Sanity check - get our own process id by another method.
   nMyProcId2 = DllCall('KERNEL32.DLL',long:'GetCurrentProcessId')
   hProcInfoBuf = BinaryFree(hProcInfoBuf)

   Return nMyParentProcId

#EndFunction


#DefineFunction IsMyParentAConsole()

  MyParentProcId = udfGetMyParentProcId()
  MyParentMods = tListMod(MyParentProcId,1)
  ConsoleModName = StrLower(StrCat(DirWindows(1),'CMD.EXE'))
  bResult = @FALSE
  nCount = ItemCount(MyParentMods,@TAB)
  For nIndex = 1 To nCount
    ModName = StrLower(ItemExtract(nIndex,MyParentMods,@TAB))
    If (ModName == ConsoleModName)
    bResult = @TRUE
    Break
    EndIf
  Next

  Return bResult

#EndFunction

AddExtender('wwprc44I.dll')
Title01 = 'Get Parent Process Id'
Result = IsMyParentAConsole()
Message(Title01,StrCat('Is my parent process a console? Result = ',Result))

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Article ID:   W16732

File Created: 2013:04:01:09:21:44

Last Updated: 2013:04:01:09:21:44