On Friday, 7 February 2014 at 16:21:20 UTC, Chris wrote:
On Friday, 7 February 2014 at 15:40:06 UTC, Adam D. Ruppe wrote:
On Friday, 7 February 2014 at 12:17:42 UTC, Chris wrote:
Just out of interest, is there a way of capturing keystrokes
in D?
This isn't so much a D question as a C one - the operating
system's C api will give a way, then you use those same
functions in D.
If you want input from your own terminal, my terminal.d might
help. See the demo main here:
https://github.com/adamdruppe/misc-stuff-including-D-programming-language-web-stuff/blob/master/terminal.d#L2007
It captures as much info as possible in real time, optionally
including window resize events, mouse motion and clicks, and
key presses. (Also key releases on Windows, but such
information is /not/ available on Linux.)
Ctrl+x keys are sent as as low ascii values. Ctrl+a is
cast(char) 1. Ctrl+b is cast(char) 2. Ctrl+c is sent as
cast(char) 3 (though note control+c is captured by the OS and
sent as an interrupt signal instead - my lib can catch that
too). and so on through Ctrl+z which is 26.
You can get more information by doing a GUI program but then
you'll have to do text output as gui too, so not as easy as
cli. Of course, you could write a terminal emulator and have
the best of both worlds... i've done it :)
https://github.com/adamdruppe/terminal-emulator
But I think terminal.d is what you want.
Now, if you want to capture input from ANY window, not just
your own, on Windows you can use the API to capture the
keyboard, on X you can listen to events on the root window,
and on Linux you can also read /dev/input to get raw keyboard
events (if you like, I have a small lib that can help with
this too). Note that reading /dev/input needs your program to
be root.
I just had a look at terminal.d. Great stuff. It works, though
it sometimes stops working and gives me this exception (after
killing it with Ctrl+C):
object.Exception@terminal.d(814): write failed for some reason
There is a syntax error on line 54;
version = Demo
should be
version = Demo;
I'll have a look at your other stuff too, it looks very
interesting.
It actually breaks when I press a modifier key like Ctrl.
