Writeln or ShowMessage

Comments

• zibadian

  October 2004

  : Hi,
  : I am trying to make my life easier and write a generic error returning function.....so I dont have to rewrite modules depending on whether it will be a command line program or if its a GUI program (Yes I know command line programs can use ShowMessage...but thats not cool!)
  :
  : So heres the question
  :
  : How can I get a function to tell whether the program it is being run inside is a console application or a windowed program?
  :
  : Cheers,
  : Johovishta
  :
  Here is a very crude method, but it works:
  [code]
  try
  writeln('This program is a console program');
  except
  ShowMessage('This program is a GUI program');
  end;
  [/code]
  If you use writeln() with the Output file inside a GUI program, you will get a I/O 103 error.
  A better alternative is to check if the Output file variable is created or not, but I don't know how to code that.
  
• johovishta

  October 2004

  : : Hi,
  : : I am trying to make my life easier and write a generic error returning function.....so I dont have to rewrite modules depending on whether it will be a command line program or if its a GUI program (Yes I know command line programs can use ShowMessage...but thats not cool!)
  : :
  : : So heres the question
  : :
  : : How can I get a function to tell whether the program it is being run inside is a console application or a windowed program?
  : :
  : : Cheers,
  : : Johovishta
  : :
  : Here is a very crude method, but it works:
  : [code]
  : try
  : writeln('This program is a console program');
  : except
  : ShowMessage('This program is a GUI program');
  : end;
  : [/code]
  : If you use writeln() with the Output file inside a GUI program, you will get a I/O 103 error.
  : A better alternative is to check if the Output file variable is created or not, but I don't know how to code that.
  :
  
  Thanks Zibidian...
  works fine but is a bit crude ..Oh well who will know but you and I
  
  
• zibadian

  October 2004

  : : : Hi,
  : : : I am trying to make my life easier and write a generic error returning function.....so I dont have to rewrite modules depending on whether it will be a command line program or if its a GUI program (Yes I know command line programs can use ShowMessage...but thats not cool!)
  : : :
  : : : So heres the question
  : : :
  : : : How can I get a function to tell whether the program it is being run inside is a console application or a windowed program?
  : : :
  : : : Cheers,
  : : : Johovishta
  : : :
  : : Here is a very crude method, but it works:
  : : [code]
  : : try
  : : writeln('This program is a console program');
  : : except
  : : ShowMessage('This program is a GUI program');
  : : end;
  : : [/code]
  : : If you use writeln() with the Output file inside a GUI program, you will get a I/O 103 error.
  : : A better alternative is to check if the Output file variable is created or not, but I don't know how to code that.
  : :
  :
  : Thanks Zibidian...
  : works fine but is a bit crude ..Oh well who will know but you and I
  :
  :
  I have found a better way: the IsConsole global variable.