keyboard hits in a console app
in [Java Programming]
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From: Roedy Green on 12 Feb 2010 15:21 On Thu, 11 Feb 2010 12:05:09 -0800 (PST), Marcin Rodzik <marteno_rodia(a)o2.pl> wrote, quoted or indirectly quoted someone who said : >Is there any way to track down keys pressed by the user in a console >app? It means reading what he/she is typing immediately. yes. For source see http://mindprod.com/products.html#KEYPLAYER -- Roedy Green Canadian Mind Products http://mindprod.com Every compilable program in a sense works. The problem is with your unrealistic expections on what it will do.
From: Arne Vajhøj on 12 Feb 2010 19:44 On 12-02-2010 06:53, Martin Gregorie wrote: > On Thu, 11 Feb 2010 21:10:37 -0500, Arne Vajhøj wrote: > >> On 11-02-2010 19:56, Martin Gregorie wrote: >>> On Thu, 11 Feb 2010 18:52:43 -0500, Arne Vajhøj wrote: >>> >>>> On 11-02-2010 15:05, Marcin Rodzik wrote: >>>>> Is there any way to track down keys pressed by the user in a console >>>>> app? It means reading what he/she is typing immediately. You can read >>>>> the standard input stream, but the stream is empty until the user >>>>> presses ENTER. I know it's a stuff related to the operating system >>>>> which always passes data to the stdin after ENTER is hit, but I'm >>>>> looking for some workaround. And it needs to work on both Windows and >>>>> Unix/Linux. Any ideas? >>>> >>>> JNI and a .dll for Windows and a .so for Linux. >>>> >>> I've done the same with a small C program using sockets to pass each >>> keystroke to the Java app. as a separate packet. It works well and has >>> a possible advantage because its portable between OSes with no changed >>> to JNI etc. The C program requires a bit of conditional compilation to >>> cater for the different ways that different OSes use to set keyboard >>> input to unbuffered raw reads, but thats about it. >> >> Why is a Java program with 1 C source and N executables more portable >> than a Java program with 1 C source and N libraries ? >> > I was taking the comment that a JNI would use a .DLL for Windows and > a .so for *nixen to mean a change to the JNI code as well. Am I mistaken? If the C code compiled to executable can be ifdef'ed to do both Linux and Windows, then the C code compiled to libraries for the same two platforms can be ifdef'ed. Arne
From: Arne Vajhøj on 12 Feb 2010 19:49
On 12-02-2010 15:21, Roedy Green wrote: > On Thu, 11 Feb 2010 12:05:09 -0800 (PST), Marcin Rodzik > <marteno_rodia(a)o2.pl> wrote, quoted or indirectly quoted someone who > said : >> Is there any way to track down keys pressed by the user in a console >> app? It means reading what he/she is typing immediately. > > yes. For source see http://mindprod.com/products.html#KEYPLAYER Since when has java.awt.Frame been a console ?? Arne |