Running a DOS application from a DLL and read its output

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  12 years ago

  by scange71

  niall scannell

  , Ireland

  Joined 13 years ago

  Hello,

  I am working on a project where, I am creating a DLL, which in turn calls up a exe (MECoder.exe). My objective is to call up exe from DLL and capture all DOS application output in realtime and also show the progress (Percent complete).

  Please help me.

   Regards

  Harsha

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  12 years ago

  by marvin

  AndyZulu

  Pietermaritzburg, South Africa

  Joined 19 years ago

  Calling the .exe is relatively easy - use a Shell.Exec type of command to execute the program, and re-direcect it's output to a file, eg: Shell.Exec("c:\program.exe >> c:\output.txt")

  That will dump all it's output into named file.

  Getting progress (feedback) would be a lot more complex and require call-backs from the .exe, which it probably doesn't have. If you have access to the code, you could modify it to emit some sort of windows message which your .DLL listens for... Tricky process

  Regards

  Andrew
  
   

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  12 years ago

  by Mistuke

  Mistaken Luke

  The Netherlands, Netherlands

  Joined 18 years ago

  It is actually quite easy and straight forward to do in c#. http://msdn.microsoft.com/en-us/library/system.diagnostics.process.outputdatareceived.aspx scroll down for a full source code example.
  Also take a look at http://msdn.microsoft.com/en-us/library/system.diagnostics.process.startinfo.aspx more specifically StartInfo.CreateNoWindow = true;

  which will allow you to hide the new process window so it doesn't get shown.

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