rcostell@augusta.UUCP (Roger Costello) (09/21/89)
I have a question concerning putting a curses program in the background (with ^Z) and then at a later time putting it in the foreground (with fg). I have found that when I put the program back into the foreground I am back in cbreakmode and in nonecho mode. How do I get the program back into the state it was in before sending it to the background? Secondly, when I do bring the program to the foreground I have observed that the screen is redrawn. How is this being accomplished? As to the later question, I am guessing that when the program is brought to the foreground the system (somehow knows to) call the curses refresh routine passing to it curscr. Is this correct? If so, then perhaps the solution to the first question is to modify the curses refresh routine such that it checks for curscr as the parameter and if curscr is the parameter then it resets the state, i.e. sets raw mode and echo mode. Sound reasonable? Thanks for any help you may be able to provide. /Roger
brister@td2cad.intel.com (James Brister) (09/22/89)
My guess about this sort of required behaviour is this:
i) the program catches the SIGTSTP signal. In the handler it reset the
terminal characteristics and then sends itself a SIGSTOP.
ii) the program catches the SIGCONT signal. In the handler it does a
refresh of the necessary stuff and then continues.
There's probably a few minor :-) details in there that need to be added. Comments?
James
--
James Brister brister@td2cad.intel.com
Intel Corp. {decwrl,oliveb}!td2cad!brister