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Thread: Calling another EXE and receiving data back

  1. Sep 4th, 2001, 08:46 PM #1
    docHoliday
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    Calling another EXE and receiving data back

    I'd like to know if it is possible in VB to write a function that calls a seperate exe on the local hard drive sending it data and arguments like a path, having it do its work, then return data back to the VB program to process. I'm sure this is a complicated process but I'm mainly looking for direction, and possibly examples on how to accomplish it.

    Thanks.
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  2. Sep 4th, 2001, 10:24 PM #2
    Matthew Gates
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    It depends. If the other exe was made by you, you can use the Command function and have it do stuff and write the information to a text file. If not, than you'd have to maybe use a few API functions to get what the program does, may not be accurate though, not sure, depending on what you are wanting to do.
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  3. Sep 4th, 2001, 10:43 PM #3
    docHoliday
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    Well I can't say for sure at the moment exactly how the program expects to receive information and/or arguments nor how it returns them, but I know it normally does this interaction with a web server.
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  4. Sep 4th, 2001, 10:48 PM #4
    Superbatman
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    Use winsock maybe?

    Try using winsock to do the comm.

    Have one app be a server, the other be a client, and then make them send data to be processed thru winsock - easy enuf
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  6. Sep 5th, 2001, 11:32 AM #5
    docHoliday
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    Winsock huh? Interesting copncept. I'll give it a whirl.
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  7. Sep 5th, 2001, 11:45 AM #6
    Serge
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    If both programs are yours then I would suggest using external program as ActiveX EXE, you can then create an instance of your ActiveX EXE, pass paramters and get the result back..
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  8. Sep 5th, 2001, 11:52 AM #7
    docHoliday
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    The program I want to communicate with is not one of my own. It's an externally written and produced program. I'm kind of alluding to it's name I know, which would proably help a lot, but I'm kind of keeping that under tabs for the moment.

    Surfice to say this: It normally runs with a web server running, either Apache, IIS or other. It can be run as a CGI executable or within the server process and I'd like to access it as if it were a CGI executable. Does that help any?
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  9. Sep 5th, 2001, 12:00 PM #8
    RCharlton
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    One thing to do would be to

    print to read STDIN - if it is to do with Apache - some kind of scripting etc. it may well write the results to STDIN
    Richard Charlton

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  11. Sep 5th, 2001, 02:38 PM #9
    docHoliday
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    How do you read STDIN within VB?
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  12. Sep 5th, 2001, 11:45 PM #10
    docHoliday
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    Could STDIN -> STDOUT be accomplished with the WinSock control?
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