getch function

prasad514 · 12-31-2004, 12:01 AM

hello all

how to get characters without echoing on the standard output.
In windows we have getch() to do this ,but it is not working
in linux. I tried with all types of getch statements then
also it is not coming.

please suggest the answer for this
prasad

Chrax · 12-31-2004, 12:16 AM

I'm just starting to play with curses, and have found noecho() to do precisely that.

Then again, as I have just started playing, I am not fully aware of the purpose of everything I'm doing. (But I'm pretty sure about this, as it was in the man page.)

bigearsbilly · 12-31-2004, 04:01 AM

do a search for getch or kbhit.
There are loads of threads on it.

billy.

1337 Twinkie · 12-31-2004, 04:14 PM

The ncurses library has a getch() function. However, getch() is just used to pass input to the program. noecho() initializes the program to not echo the input. The basic guide and some examples can be found here.

If you would like another example, I wrote a pong-style game using ncurses while I was learning C++.

Disclaimer- The actual gameplay code isn't all that spectacular and is not that efficient, but it should provide a decent example of how ncurses can be used

deveraux83 · 01-03-2005, 05:15 AM

I used to be caught up in this as well. ncurses actually implements getch() very similarly to the windows counterpart. The only thing is, you have to execute several other functions to make it work right such as noecho(), raw() and other functions (I haven't used ncurses in over 2 years, so I'm getting rusty). Also, if you want to do complicated keyboard manipulation, just look out for escape sequences (I'm not sure if windows did it this way -- haven't programmed in windows even longer).

Marius2 · 01-03-2005, 09:21 AM

Try this, it should (roughly, hopefully :-)) behave like getch:

char getch_substitute(){
char ch;
read(0,&ch,1);
if(ch==91)read(0,&ch,1);
return ch;
}

HTH

exvor · 01-03-2005, 11:48 AM

umm theres lots of things you can use

getchar
putchar
getc
fgetc
putc
fputc
ungetc

these all work with single character input and output

these are part of stdio.h