Share data between 2 instances of a script?

[EmkioA]

Is there a way to share a variable between 2 instaces of the same script?

I need to detect if a script is run twice and the seconds time i need to make something defined by the first instance of the script

#include <Misc.au3>
Global $Running 


If _Singleton( "TestScript", 1 ) = 0 Then
 
 msgbox( 0, "", $Running )
    
Else
 
 $Running = 4
 msgbox( 0, "Test", "TestScript" )
 
EndIf

i would like to have a message box with 4 into the seconde instance of this script, how can i do this?

Stéphane

[Richard Robertson]

You could create a window with a hidden style and send it a window message. I've used that before.

[trancexx]

I don't think this is possible.

[Richard Robertson]

It is possible. The way I listed is just one way.

[trancexx]

Is there anything I could do to make you elaborate on that?

[toonboon]

How about asking the question, 'Could you help me on my way to solving this problem?'

[muncherw]

What I've done in the past is made a text file that the script can write your variable into and the second time it's run it checks to see if the variable is written there, if it is, do what you need to do otherwise write it.

[Richard Robertson]

File writing isn't the best way to share data between processes because of the internal caching of the OS.

I don't know what more there is to elaborate. You create a hidden window. You watch for a message that you create. You have the second process find your hidden window and send it a message. That's not hard.

[trancexx]

What is the point of sending messages in that case?

[Richard Robertson]

The whole purpose of the thread is interprocess communication. Sending a message from one program to another using window messages is a simple example of how to do that.

[Yashied]

http://www.autoitscript.com/forum/index.php?s=&showtopic=94887&view=findpost&p=681941

[Richard Robertson]

Yes, that is exactly what I was talking about.

[trancexx]

Ok. Could communication be in both ways? Yashied's (nice work) is not example of intercommunication. He is practicing one-way communication.

(I was under impression you were talking about two-way communication)

[Yashied]

Ok. Could communication be in both ways? Yashied's (nice work) is not example of intercommunication. He is practicing one-way communication.

(I was under impression you were talking about two-way communication)

If you look more closely, then you will understand that the message is sent in both directions. The button "Send" is blocked until receiving a reply message. See also this example.

[trancexx]

If you look more closely, then you will understand that the message is sent in both directions. The button "Send" is blocked until receiving a reply message. See also this example.

Very nice Yashied. Thanks.