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Getting Data from an independent program

 
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Getting Data from an independent program
Kraiden
18 Sep, 2007 - 11:28 PM
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Hi there!

I have a problem. I have been asked to write a program that will take info from an independent program and write it to a file. to explain, a window will pop on screen saying something like "Hello <username>" and My program then needs to...

See that this has happened, take the username, and write it to a file.

My problem is this... I have no idea how to a) detect that a program has opened on screen, and cool.gif how to get that user name.

I know this is probably very simple to do, but I, being a n00b programmer, have no idea how! I was hoping that someone here might be able to point me in the right direction.

please help me!
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goldenthunder
RE: Getting Data From An Independent Program
19 Sep, 2007 - 12:24 AM
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I guess you cant change the independent programm, can you?

If yes, you could send a TCP-Message (even if it is on the same computer) with the username.
your programm (running in the background) would listen to an arranged port.

If you have no access to the independent programm, I have no idea.
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Kraiden
RE: Getting Data From An Independent Program
19 Sep, 2007 - 12:30 AM
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Ye, we have no access to the independent program at all! I was thinking, is there some way to view the windows processes through java? because that would solve the problem of knowing if the independent program is running or not!
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Programmist
RE: Getting Data From An Independent Program
19 Sep, 2007 - 01:19 AM
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Even if you checked the Windows processes and knew that the program was running (which would be difficult since most all java programs show up as java.exe) how would you get the user name from it? It would be running in it's own JVM, so you would need to use some sort of IPC method to communicate with the process.

This post has been edited by Programmist: 19 Sep, 2007 - 01:20 AM
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1lacca
RE: Getting Data From An Independent Program
19 Sep, 2007 - 02:54 AM
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These kind of things are possible with the Windows API. From Java you can access those functions with JNA, but generally this task is much easier to implement in C. Doing it from Java is pointless, just makes the whole thing much more difficult without any reason.
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