Stdinwrite/stdoutread [Solved}

[JohnOne]

Im wanting to start having a go at using these to comunicate dynemicaly with scripts/execs.

Problem is I cant even get off the geound, because I just cant understand it.

In both examples in the helpfile there is a Run() function to get the PID of the app it wants to comunicate with.

I get that, if one of them has the Run() in it but how can they both have a function to run each other, I just dont get it at all, one runs the other which in turn runs the one that run itself ?

My goal it to have appA run appB and collect data from from it through the stream. I thought I was on the right track using EnvSet/Get until I realised I couldnt set and get a variable from a function on the fly.

Can anyone explain this in a fashion that numbskull can understand ?

I'd appreciate it.

Edited May 15, 2010 by JohnOne

[DW1]

Compile both of these and run AppA.exe

AppA will read the Stdout from AppB and then just take the last line/number and display it in the GUI.

I hope this example helps you.

AppA

#include <GUIConstantsEx.au3>
#include <Constants.au3>
$GUI = GUICreate("AppA", 200, 150, @DesktopWidth/2 - 215)
$Label = GUICtrlCreateLabel('', 0, 65, 200, 20, 0x01)
GUISetState(@SW_SHOW)

If FileExists("AppB.exe") Then
    $Run = Run("AppB.exe", "", @SW_SHOW, $STDERR_CHILD + $STDOUT_CHILD)
Else
    MsgBox(0, "Error", "AppB.exe Not found!")
    Exit
EndIf

While ProcessExists($Run)
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit
    EndSwitch
    $Read = StdoutRead($Run)
    $aRead = StringSplit($Read, @CRLF)
    GUICtrlSetData($Label, $aRead[$aRead[0]])
    Sleep(10)
WEnd

AppB

#include <GUIConstantsEx.au3>
$GUI = GUICreate("AppB", 200, 150, @DesktopWidth/2)
$Label = GUICtrlCreateLabel('', 0, 65, 200, 20, 0x01)

$pid = ProcessExists("AppA.exe")
If $pid <> 0 Then
    $A = 0
    GUISetState(@SW_SHOW)
Else
    MsgBox(0, "Error", "Run from AppA.exe")
    Exit
EndIf


While ProcessExists($pid)
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit
    EndSwitch
    $A += 1
    GUICtrlSetData($Label, $A)
    ConsoleWrite(@CRLF & $A)
    Sleep(10)
WEnd

Edited May 15, 2010 by danwilli

[JohnOne]

danwilli

Yes it helped enormously.

Thank you very kindly, appreciated.