Click on cmd.exe running.

[Fraile]

Hello everyone, I am trying to click on a running cmd.exe to pause the process that is running at that moment. But I can't.

Can anybody help me?.

Thank you very much.

My code:

.Const

.Data?

.Data

hInst            HINSTANCE   NULL

szClassName         DB         'EasyCode2MainWindow', 0
szTitle            DB         'Main window', 0

Handle            DD 0
Buscar            DB "ConsoleWindowClass", 0

.Code

start:
   Invoke GetModuleHandle, NULL
   Mov hInst, Eax
   Invoke GetCommandLine

   Invoke EnvioTecla

   Invoke ExitProcess, Eax

EnvioTecla Proc


   Invoke FindWindowEx, 0, 0, Offset Buscar, NULL
   Mov Handle, Eax

   .If Eax != NULL

        Invoke PostMessage, Handle, WM_LBUTTONDOWN, 0, 0
        Invoke PostMessage, Handle, WM_LBUTTONUP, 0, 0

   .EndIf

   Ret
EnvioTecla EndP

End start

[Fraile]

Sorry, I think I have not focused the question well, what I want is to stop the cmd.exe process. But I think you can't...

[jj2007]

You could simply press Ctrl C...

[avcaballero]

Tal vez quiera usted decir algo así?

Code Select Expand


.386
.MODEL      flat, STDCALL
OPTION      casemap :none

INCLUDE     windows.inc
INCLUDE     kernel32.inc
INCLUDE     msvcrt.inc
INCLUDELIB  kernel32.lib
INCLUDELIB  msvcrt.lib

.DATA
  Continuar DB   "Pulsa Espacio para pausar, ESC para terminar...", 13, 10, 0

.CODE
  WaitKeyCrt PROC
    @Bucle:
      INVOKE    crt_printf, OFFSET Continuar   ; MASM le añade "add esp, 4"
      invoke    crt__kbhit
      cmp       eax, 0
    jz        @Bucle      ; Repetimos el bucle mientras no pulsemos ninguna tecla
    INVOKE    crt__getch  ; Vaciamos el keybuffer
    cmp       eax, 27
    jz        @Fin
    cmp       eax, 32
    jnz       @Bucle
    @Pausa:
      invoke    crt__kbhit
      cmp       eax, 0
    jz        @Pausa      ; Repetimos el bucle mientras no pulsemos ninguna tecla
    INVOKE    crt__getch  ; Vaciamos el keybuffer
    jmp       @Bucle
    @Fin:
    RET
  WaitKeyCrt ENDP

  start:
    INVOKE    WaitKeyCrt
    INVOKE    crt__exit, 0

END start


Code Select Expand


C:\masm32\bin\ml.exe /c /coff /Cp /IC:\masm32\Include ConWM03.ASM
C:\masm32\bin\link.exe /SUBSYSTEM:CONSOLE /LIBPATH:c:\masm32\lib ConWM03.obj


[jj2007]

.

[Fraile]

Muchas gracias por contestar Caballero, veo que somos hispanos los dos quizas?. Imagina poner en una cmd "dir c: /S" para que liste todos los directorios de tu unidad C, esto llevara un rato... pues lo que quiero simular es como si le dieras un clic a la cmd, para que pare y nos siga buscando... no se si me explico bien. O de alguna forma poder pausar un proceso cmd.exe que este en ejecucion. De nuevo muchas gracias.

[avcaballero]

Sí, de la antigua Hispania 

Code Select Expand

dir /p

Si no es esto a lo que te refieres, pues ya no sé....

[jj2007]

Hi Fraile,

As mentioned earlier, you can stop the process by simply pressing Ctrl C. If, however, you only want to pause the process, there is a simple method. While your dir C:\*.* is running...
- click on the DOS window's system menu in the upper left corner
- click on "Modify->Select"

The process will be suspended until you hit Return. Check in Task Manager: cpu usage will be 0%.

[Fraile]

Hi JJ2007, the idea is good, but how do I do it from assembler?

Thank you very much.

[Fraile]

This code activates the window for me, now I have to send the keystrokes, ctrl+a

   Invoke FindWindowEx, 0, 0, Offset Buscar, NULL
   Mov Handle, Eax

   .If Eax != NULL

      Invoke SetForegroundWindow, Handle


   .EndIf

[Greenhorn]

Hi Fraile,

you can try the SendInput API.

[Fraile]

Thanks a lot, Greenhorn, I'll give it a try. But I think, the console (cmd.exe), is a bit finicky. Anyway I try it. a cordial greeting.

[Fraile]

any example in masm for sendinput?
Thanks a lot.

[Greenhorn]

Based on the example but untested ...

Code Select Expand


ifndef MOUSEINPUT
MOUSEINPUT STRUCT
     _dx       LONG ?
     dy        LONG ?
     mouseData dd ?
     dwFlags   dd ?
     time      dd ?
dwExtraInfo         ULONG_PTR ?
MOUSEINPUT ENDS
PMOUSEINPUT typedef ptr MOUSEINPUT
LPMOUSEINPUT typedef ptr MOUSEINPUT
endif

ifndef KEYBDINPUT
KEYBDINPUT STRUCT
     wVk            dw ?
     wScan          dw ?
     dwFlags        dd ?
     time           dd ?
     dwExtraInfo    ULONG_PTR ?
KEYBDINPUT ENDS
PKEYBDINPUT typedef ptr KEYBDINPUT
LPKEYBDINPUT typedef ptr KEYBDINPUT
endif

ifndef HARDWAREINPUT
HARDWAREINPUT STRUCT
     uMsg      dd ?
     wParamL   dw ?
     wParamH   dw ?
HARDWAREINPUT ENDS
PHARDWAREINPUT typedef ptr HARDWAREINPUT
LPHARDWAREINPUT typedef ptr HARDWAREINPUT
endif

INPUT_MOUSE         equ 0
INPUT_KEYBOARD      equ 1
INPUT_HARDWARE      equ 2


ifndef INPUT
INPUT STRUCT
     type      dd ?
     UNION
          mi   MOUSEINPUT <>
          ki   KEYBDINPUT <>
          hi   HARDWAREINPUT <>
     ENDS
INPUT ENDS
PINPUT typedef ptr INPUT
LPINPUT typedef ptr INPUT
endif

.Data

hInst            HINSTANCE   NULL

szClassName         DB         'EasyCode2MainWindow', 0
szTitle            DB         'Main window', 0

Handle            DD 0
Buscar            DB "ConsoleWindowClass", 0

.code
start:
   Invoke GetModuleHandle, NULL
   Mov hInst, Eax
   Invoke GetCommandLine

   Invoke EnvioTecla

   Invoke ExitProcess, Eax

EnvioTecla Proc

LOCAL inputs[4]:    INPUT

     Invoke FindWindowEx, 0, 0, Offset Buscar, NULL
     Mov Handle, Eax

     .If Eax != NULL

          Invoke SetForegroundWindow, Handle

          .If Eax != 0
         
               Invoke RtlZeroMemory, addr inputs, sizeof INPUT * 4

               Mov inputs[0].type,   INPUT_KEYBOARD
               Mov inputs[0].ki.wVk, VK_CONTROL

               Mov inputs[sizeof INPUT].type,   INPUT_KEYBOARD
               Mov inputs[sizeof INPUT].ki.wVk, VK_A

               Mov inputs[2 * sizeof INPUT].type,       INPUT_KEYBOARD
               Mov inputs[2 * sizeof INPUT].ki.wVk,     VK_A
               Mov inputs[2 * sizeof INPUT].ki.dwFlags, KEYEVENTF_KEYUP

               Mov inputs[3 * sizeof INPUT].type,       INPUT_KEYBOARD
               Mov inputs[3 * sizeof INPUT].ki.wVk,     VK_CONTROL
               Mov inputs[3 * sizeof INPUT].ki.dwFlags, KEYEVENTF_KEYUP

               Invoke SendInput, 4, addr inputs, sizeof INPUT
          .EndIf
     .EndIf

     Ret
EnvioTecla EndP

End start


Don't forget the includes ...
I'm not sure if the structures are already defined in MASM32 includes.

[Fraile]

Thank you very much, Greenhorn. I've managed to do it, basically like you. but something fails me, it stays blocked, the key.

Code new:

.Const

.Data?
KEYBOARDINPUT struc
dtype        DWORD ?
wVk          WORD  ?
wScan        WORD  ?
dwFlags      DWORD ?
ttime         DWord ?
dwExtraInfo  DWORD ?
dummy1 db 8 dup (?)
KEYBOARDINPUT EndS

.Data

hInst            HINSTANCE   NULL

szClassName         DB         'EasyCode2MainWindow', 0
szTitle            DB         'Main window', 0

PrgSend            DB "cmd.exe", 0
Handle            DD 0
Buscar            DB "ConsoleWindowClass", 0

Keys   KEYBOARDINPUT <>


.Code



start:
   Invoke GetModuleHandle, NULL
   Mov hInst, Eax
   Invoke GetCommandLine


    Invoke EnvioTecla




   Invoke ExitProcess, Eax

EnvioTecla Proc


   Invoke FindWindowEx, 0, 0, Offset Buscar, NULL
   Mov Handle, Eax

   .If Eax != NULL

      Invoke SetForegroundWindow, Handle

      Mov Keys.dtype, INPUT_KEYBOARD
      Mov Keys.wScan, 0
      Mov Keys.ttime, 0
      Mov Keys.dwExtraInfo, 0

      Mov Keys.wVk, VK_CONTROL
      Mov Keys.dwFlags, 0
      Invoke SendInput, 1, Addr Keys, SizeOf Keys

      Mov Keys.wVk, 'A'
      Mov Keys.dwFlags, 0
      Invoke SendInput, 1, Addr Keys, SizeOf Keys


      Mov Keys.wVk, 'A'
      Mov Keys.dwFlags, WM_KEYUP
      Invoke SendInput, 1, Addr Keys, SizeOf Keys

      Mov Keys.wVk, VK_CONTROL
      Mov Keys.dwFlags, WM_KEYUP
      Invoke SendInput, 1, Addr Keys, SizeOf Keys


   .EndIf

   Ret
EnvioTecla EndP