How to return value from Child process

[njkone]

Hi,  sorry for My English, 

I would Like to create a simple script2.exe child that return a generic number value in script1 father and read this value through stdoutread(). 

What can i write in script2.exe to return the value? 

Thanks guys 

[Earthshine]

I felt like  after reading that the first time.

sorry, there is a return statement that you use to return values from functions

good day.

https://www.autoitscript.com/autoit3/docs/keywords/Func.htm

[Danyfirex]

If is a Integer Number you can use Exit.

 

App 1 retuns number.

Exit 12345

App 2 Get the number

Local $iNumber=ShellExecuteWait("App1.exe")

 

Saludos

Edited November 6, 2017 by Danyfirex

[njkone]

Thanks for reply

my script2.exe contain this code

#include <Array.au3>
#include <GUIConstants.au3>
#include <MsgBoxConstants.au3>
#include <AutoItConstants.au3>
#include <Constants.au3>

While 1

for $y=150 to 630

    $emay=PixelGetColor(736,$y)
    $emay2=PixelGetColor(739,$y)
    $emay3=PixelGetColor(742,$y)
    $emay4=PixelGetColor(744,$y)
    $emay5=PixelGetColor(746,$y)
    $emay6=PixelGetColor(748,$y)
    $emay7=PixelGetColor(750,$y)
    $emay8=PixelGetColor(752,$y)
    

    if $emay>15800000 or $emay2>15800000 or $emay3>15800000 or $emay4>15800000 or $emay5>15800000 or $emay6>15800000 or $emay7>15800000 or $emay8>15800000     Then
       $y -= 25
    EndIf

Next

WEnd

can i return the $y value ?

in main program this is the code:

$pid=Run("script2.exe","",$STDOUT_CHILD)
Sleep(500)
$out=StdoutRead($pid)

 

[Danyfirex]

I meant this.

;Child Script
Local $iY=Random(-100,100,1)
Exit $iY



;father Script
Local $iY=ShellExecuteWait("child.exe")
MsgBox(0,"","Y value returned from Child: " & $iY)

 

 

Saludos

[njkone]

yes i understand,

how can i return the $y form the while loop childr process?

[Danyfirex]

Read help File.

 

Saludos

[njkone]

 

ok, but i go not know what to look in the help file.

i'd like to know what function i can use in the child process to return value and in the fhater process to read value, but not close the process child.

thank you all.

[Danyfirex]

mmm I see. Probably you need another way. Do a google search about comunication between procress. There is many examples around the forum.

 

 

Saludos

[njkone]

i tried solutions before opening the topic but i did not find anything.

i expect other answers, do not have other choice.

thank you all.

[BrewManNH]

Search for IPC or Inter Process Communication in the forum.

[njkone]

thank you for the reply,

i tried ipc but is very complicated for me.

in summary i need a way to communicate 2 process, the child process contains the value and the father process read this value(in the child), for more times (loop).  

is there a simple way? example : send message from child to father? message= number value. 

[RTFC]

Trancexx's MailSlot is one of the simplest ways of achieving IPC.

[njkone]

thank you for reply,

i need to receive a single variable automatically from children to father.

do you think i can change it for my purpose? 

[BrewManNH]

Write to a file from the child, read it from the parent process if everything else is more than you need.

[njkone]

2 hours ago, BrewManNH said:

Write to a file from the child, read it from the parent process if everything else is more than you need.

do you refer to the way MailSlot? or other? 

[RTFC]

8 hours ago, njkone said:

do you refer to the way MailSlot?

No. Look up Iniwrite and IniRead in the Help file, if you don't want to use MailSlot.

[njkone]

Thanks man.  It works Perfect and rapid.

Solved.