Re: Control key with Ncurses

[Vidya Kotamraju <vidyakr@darya.nio.org>]

I had enabled the keypad() along with the other graphics initializations.
Also, Control codes do work with getch().
But what i need to know is how to make use of a control key to exit out 
of a scanw input. (As control-D would work with scanf without needing to 
make use of getchar)


Regards,
Vidya.

Glynn Clements wrote:

 > Vidya Kotamraju wrote:
 >
 >
 >>I am writing a graphics-based application in Linux by making use of C
 >>and ncurses library.
 >>The application needs that i take two numbers as input ( i make use of
 >>scanw for the same).
 >>However at this point in the program i want the user to obtain the
 >>flexibility of exiting gracefully from the program(by pressing a cntrl
 >>key,like say F5).
 >>
 >
 > You need to call keypad() to enable the use of "extended" keys
 > (funcion keys, arrow keys etc). The various KEY_* macros define the
 > codes for the extended keys; for function keys, use KEY_F(), e.g.
 > KEY_F(5) for F5.
 >
 >
 >>Cntrl-D doesnt seem to work with ncurses..
 >>
 >
 > Control codes should be reported by getch() etc as a code in the range
 > 0 to 31 (e.g. Ctrl-D should be code 4).
 >
 >


-- 
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As far as the laws of mathematics refer to reality,they are not certain;
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Kotamraju Vidya
Marine HydroDynamics Lab,
Physical Oceanography Division,
National Institute of Oceanography,
Dona Paula, Goa 403 004, India.
Ph.: +91-832-2456700 *4400 (O)
       +91-832-2541756 (R)
e-mail: vidyakr@darya.nio.org