Correct way to redirect StdOut .. please?

[Barry Day]

G'day Folks,

 

Correct way to redirect StdOut .. please?

 

   ...Because...

 

I cannot get output redirection to work, using...

  Assign (Output, '');

  Rewrite(Output);

 

Same problem if I change it to ..

 

  Assign (StdOut, '');

  Rewrite(StdOut);

 

..Unless....

 

WriteLn is used (always) thus ... WriteLn(Output, "whatever");

 

ie: just WriteLn("whatever");  ..does not work!  (when redirecting output)

 

Soooooo...

What is the correct way to redirect StdOut .. please?

 

Many Thanks

Barry

 

[Marco van de Voort]

I've no answer, but mentioning the OS could be beneficial to other answers. I assume you use Crt for kbd only and want to get ordinary output back?

[Barry Day]

Fair enough .. it's Windows XP....

 

And I want to use standard redirection at the command-line thus...

(AFAIK .. this is pretty standard)..

 

C:\>  MyExe  parm1  parm2  >  X:\MyOutputfile.txt

 

So that any WriteLn output goes to MyOutputfile.txt, instead of the screen.

 

But I wouldn't have thought that it was OS-specific .... or is it?

 

Surely I'm not the only one using/wanting re-direction .. am I?  :-)

 

Cheers

Barry

[Yoda]

Don't use the CRT unit. If you use the CRT unit, everything gets sent directly to the screen. When not using it, everything gets sent to StdOut.

[Marco van de Voort]

On TP, the code that Barry posted undoes the effect output (video) effects of Crt. That's why I assumed he used Crt for keyboard related purposes only

[Barry Day]

G'day Folks

 

Arrgggghhhhh!   I forgot ....         (It *does* work)...

 

The "Assign (Output, '')" statement has to be the very *first* statement ... and I was burying it in an initialisation routine - which is why it didn't work at that time.

 

So... Very sorry ... mea culpa   or ..      a case of..... RTFM ..!  :-))

 

My apologies to all for what amounts to a "red herring" ...

 

Please don't hit me :-)

 

Cheers

Barry