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Thread: [RESOLVED] Send message from one application to another in same computer

  1. Apr 27th, 2006, 11:28 PM #1
    cssriraman
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    Resolved [RESOLVED] Send message from one application to another in same computer

    Hi all,

    I've created two application in vb6 (let's say app1 and app2) and want to send/pass a message/text from app1 to app2.

    How can i do that?

    Thanks in advance.
    CS
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  2. Apr 28th, 2006, 01:09 AM #2
    RobDog888
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    Re: Send message from one application to another in same computer

    You can use the FindWindow, FindWindowEx and SendMessage APIs.

    What type of message do you want to send?
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  3. Apr 28th, 2006, 01:37 AM #3
    Shuja Ali
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    Re: Send message from one application to another in same computer

    What exactly do want to pass? You could also use command line arguments to pass data from one app to another. You can also use Dynamic Data Exchange

    Or use what RD has suggested.
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  4. Apr 28th, 2006, 02:17 AM #4
    dee-u
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    Re: Send message from one application to another in same computer

    Or perhaps a textfile where both application can read/write...
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  6. Apr 28th, 2006, 02:32 AM #5
    pnish
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    Re: Send message from one application to another in same computer

    Or Winsock....
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  7. Apr 28th, 2006, 01:19 PM #6
    cssriraman
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    Re: Send message from one application to another in same computer

    the first application will process some sort of tools and i need to send the status to another application every 200 milliseconds.

    Simply i need something like chat application. I don't want to send and receive. I just want to send to application 2 from application 1.

    I hope it is clear.
    CS
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  8. Apr 28th, 2006, 01:19 PM #7
    cssriraman
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    Re: Send message from one application to another in same computer

    One more thing, I forget...

    Both application will be running simultaneously in same system.
    CS
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  9. Apr 28th, 2006, 01:27 PM #8
    dreamvb
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    Re: Send message from one application to another in same computer

    Have you tryed uing AddAtom, FindAdtom, DeleteAtom, you can use them to pass stuff bac and forth between apps.
    Or use ActiveX, or as someone said above FindWindow, PostMessage, etc
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  11. Apr 28th, 2006, 01:28 PM #9
    ghettohacker
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    Re: Send message from one application to another in same computer

    Quote Originally Posted by RobDog888
    You can use the FindWindow, FindWindowEx and SendMessage APIs.

    What type of message do you want to send?
    sounds like the best option to me.
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  12. Apr 28th, 2006, 01:37 PM #10
    cssriraman
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    Re: Send message from one application to another in same computer

    Quote Originally Posted by RobDog888
    You can use the FindWindow, FindWindowEx and SendMessage APIs.

    What type of message do you want to send?
    I don't know how this will work for me. For example, the app1 will send a message "I opened the VB forums web page... at 29-Apr-2006 00:03:09". This message should appear in a text box or some thing. After that app1 will send another message like "Classic Visual basic window is opened... at 29-Apr-2006 00:04:21", something like that. Now the app2 should display both the messages one by one in a text box or something. The app1 will send atleast 50 messages to max 100 messages after that both the applications will quit. That's it.

    Please suggest if you have any other good ideas. Basically the app1 will send some status to app2. app1 will be hidden. app2 is visible to the user.
    CS
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