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Writing a simple program

Posted on 2000-02-25
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Last Modified: 2012-05-04
I was wondering if someone could tell me how, in C or C++, that i could print stuff from a program directly to the cursor. i know how to print things to .txt but no to the cursor in real time
Can anyone help
Thanks
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Question by:ciaran_g
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Expert Comment

by:serp_mage
ID: 2560543
If "to the cursor" means to the command line, or to a DOS window when using Visual C++, you have a couple options.  You can do the C thing:
e.g.,
#include <stdio.h>
.. . .
printf("what's up?\n");    

or you can do the C++ thing,
#include <iostream.h>  //might not need the ".h" suffix
.. . .
cout << "what's up?\n";
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Expert Comment

by:Wyn
ID: 2560671
What is "to the cursor"?
serp_mage's or what?
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Expert Comment

by:RONSLOW
ID: 2560772
serp_mage seems to have answered it .. suggest you put it up as an answer.
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Expert Comment

by:nietod
ID: 2560821
And what OS is this for? and What compiler are you using?
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Expert Comment

by:nutsnuts
ID: 2561135
If serp_mage has answered what "to the cursor" is, so I think you can put the output to a file like this:

#include <stdio.h>

   FILE *stream;
   int    i = 10;
   double fp = 1.5;
   char   s[] = "this is a string";
   char   c = '\n';

   stream = fopen( "output.txt", "w" );
   fprintf( stream, "%s%c", s, c );
   fprintf( stream, "%d\n", i );
   fprintf( stream, "%f\n", fp );
   fclose( stream );

That's it.
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Author Comment

by:ciaran_g
ID: 2562453
Adjusted points to 100
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Author Comment

by:ciaran_g
ID: 2562454
Sorry guys, i didn't make myself clear, say if i had a flashing cursor in a program, i minimse that, run my program and my program would print stuff out to that flashing cursor. maybe put a delay on my program and then get my program to print to wherever the cursor was flashing. i am using borland C++ 4.5. and i want to print stuff to a windows program (to where the cursor is flashing)
Thanks
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Accepted Solution

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nietod earned 100 total points
ID: 2562631
Are you saying you want to "fake" keystrokes.  i.e. have our progream make the computer act like keys were types by the user?

The easiest way to do this is use keybd_event().  However, it only works if the program you want to have "receive" the keystrokes has the focus.  If the program doesn't have the focus, you can set the program WM_KEYDOWN and WM_KEYUP messages using sendmessage, however this tends to be harder to do and less reliable.
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Author Comment

by:ciaran_g
ID: 2562797
That just what i want, thats great, thanks a lot, really appreciate it
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Expert Comment

by:RONSLOW
ID: 2563222
Shame you didn't say that in the first place :-).
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