C++Talk.NET C++ language newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Problem in C++ Program          C++Talk.NET Forum Index -> C++ Language (Moderated) View previous topic :: View next topic   Author Message ~Wizard~ Guest Posted: Thu Jun 29, 2006 4:27 pm    Post subject: Problem in C++ Program Assalam u alaikum well I'm Qasim going BCS(hons). There are vocation of Summer Semester so i started to creat programs, but ther is an obstical to actieve my program, kingly help me out. I must not discuss my whole problem, i must tell u the specific problem. See Take a situation that the program is printing "Qasim" on the monitor, it's an infinite loop, i want that when u press any button it will stop printing "Qasim". and just say that you have presseng that specific button. Kindly tell me how i could interfare durring the execution of program. Actually I'm using this logic in the prepration of a game named "Pack man". that is, if i pressed the up arrow key button the object eater goes on moving and when i press left key, i'll start moving to the left till the new button is not pressed. Waitting for your help. [ See http://www.gotw.ca/resources/clcm.htm for info about ] [ comp.lang.c++.moderated. First time posters: Do this! ] Back to top Francis Glassborow Guest Posted: Sat Jul 01, 2006 2:23 am    Post subject: Re: Problem in C++ Program In article <1151520764.346676.172940 (AT) p79g2000cwp (DOT) googlegroups.com>, ~Wizard~ <kingkazmi1988 (AT) gmail (DOT) com> writes Quote: Actually I'm using this logic in the prepration of a game named "Pack man". that is, if i pressed the up arrow key button the object eater goes on moving and when i press left key, i'll start moving to the left till the new button is not pressed. C++ does not support a raw keyboard read, not least because not every system has such a thing as a keyboard. However there are platform specific libraries that provide such support. One example of such a library is the Playpen library that accompanies my book (and that library supports both MS Windows platforms and X-Windows supporting platforms such as Linux and MacOS X) The relevant source code is available from the books' website. -- Francis Glassborow ACCU Author of 'You Can Do It!' and "You Can Program in C++" see http://www.spellen.org/youcandoit For project ideas and contributions: http://www.spellen.org/youcandoit/projects [ See http://www.gotw.ca/resources/clcm.htm for info about ] [ comp.lang.c++.moderated. First time posters: Do this! ] Back to top Frederick Gotham Guest Posted: Sat Jul 01, 2006 2:25 am    Post subject: Re: Problem in C++ Program ~Wizard~ posted: Quote: Assalam u alaikum Please keep the newsgroup religion-free. Quote: well I'm Qasim going BCS(hons). There are vocation of Summer Semester so i started to creat programs, but ther is an obstical to actieve my program, kingly help me out. I must not discuss my whole problem, i must tell u the specific problem. See Take a situation that the program is printing "Qasim" on the monitor, it's an infinite loop, i want that when u press any button it will stop printing "Qasim". and just say that you have presseng that specific button. Kindly tell me how i could interfare durring the execution of program. Actually I'm using this logic in the prepration of a game named "Pack man". that is, if i pressed the up arrow key button the object eater goes on moving and when i press left key, i'll start moving to the left till the new button is not pressed. Can't be done with Standard C++. Either use threads, or call some sort of system-specific API function which tells you if there's a key being held down: while ( !KeyIsDown() ) { std::cout << "Qasim"; } Go to a newsgroup specific to your platform. -- Frederick Gotham [ See http://www.gotw.ca/resources/clcm.htm for info about ] [ comp.lang.c++.moderated. First time posters: Do this! ] Back to top Carl Barron Guest Posted: Sat Jul 01, 2006 6:15 am    Post subject: Re: Problem in C++ Program In article <1151520764.346676.172940 (AT) p79g2000cwp (DOT) googlegroups.com>, ~Wizard~ <kingkazmi1988 (AT) gmail (DOT) com> wrote: Quote: Assalam u alaikum well I'm Qasim going BCS(hons). There are vocation of Summer Semester so i started to creat programs, but ther is an obstical to actieve my program, kingly help me out. I must not discuss my whole problem, i must tell u the specific problem. See Take a situation that the program is printing "Qasim" on the monitor, it's an infinite loop, i want that when u press any button it will stop printing "Qasim". and just say that you have presseng that specific button. Kindly tell me how i could interfare durring the execution of program. Actually I'm using this logic in the prepration of a game named "Pack man". that is, if i pressed the up arrow key button the object eater goes on moving and when i press left key, i'll start moving to the left till the new button is not pressed. Waitting for your help. Ask in an OS specific newsgroup, as there is no standard way to to determine if arrow keys are input to std::cin, and infact most std::cins will buffer until a return is pressed, there is no standard C++ or C function/class that gets any keycode from the keyboard and returns when one key is pressed. [ See http://www.gotw.ca/resources/clcm.htm for info about ] [ comp.lang.c++.moderated. First time posters: Do this! ] Back to top kanze Guest Posted: Mon Jul 03, 2006 4:14 pm    Post subject: Re: Problem in C++ Program Francis Glassborow wrote: Quote: In article <1151520764.346676.172940 (AT) p79g2000cwp (DOT) googlegroups.com>, ~Wizard~ <kingkazmi1988 (AT) gmail (DOT) com> writes Actually I'm using this logic in the prepration of a game named "Pack man". that is, if i pressed the up arrow key button the object eater goes on moving and when i press left key, i'll start moving to the left till the new button is not pressed. C++ does not support a raw keyboard read, not least because not every system has such a thing as a keyboard. However there are platform specific libraries that provide such support. I think the reasons are more complicated than that. After all, C++ does support the function time(), although not all systems have a real time clock. Quote: One example of such a library is the Playpen library that accompanies my book (and that library supports both MS Windows platforms and X-Windows supporting platforms such as Linux and MacOS X) The relevant source code is available from the books' website. I think the quasi-standard for this sort of thing is (n)curses, although that might be more complex than what the original poster is looking for. There are a number of different implementations, both as freeware and commerical products. -- James Kanze GABI Software Conseils en informatique orientée objet/ Beratung in objektorientierter Datenverarbeitung 9 place Sémard, 78210 St.-Cyr-l'École, France, +33 (0)1 30 23 00 34 [ See http://www.gotw.ca/resources/clcm.htm for info about ] [ comp.lang.c++.moderated. 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