Display file usage

Can someone give me an advice on display file usage from C-program.

I have a program, it works. Sometimes when users enters wrong data 
into a form, it shows error messages. They are defined in DDS with 
ERRMSG keyword and indicator. I just turn that indicator on and it 
appears. I set it off and it disappears. It's a piece of cake.....

But there is a problem. When I output and error message this way, my 
terminal locks keyboard (I use MochaSoft TN5250 for W95/98/NT).
It is O'k, as other programs work the same way. The user presses 
<RESET> button and resets the keyboard lock.

But I would like to gain a control over the lock from inside my 
program! 

In other words I want that some of the error messages lock 
the keyboard, and some do not. Is there a way to do that via some 
smart DDS programming?

Any advice will be highly appreciated.....

TIA,
Eugene Astanovsky.
Jevgeni Astanovski, 
IT Hooldusosakonna juhataja                                
Optiva Pank.
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