i want to detect arrow keys with arsd.terminal.RealTimeConsoleInput,
how can i do that?

thanks for answers already.

On Friday, 11 April 2025 at 13:51:59 UTC, Zoda wrote:

The secret is kinda tucked away but here's the enum that defines these keys as magic characters:

https://opendlang.org/library/arsd.terminal.KeyboardEvent.Key.html

You can use that in a switch along with other characters in a getch loop:

import arsd.terminal;

void main() {
        auto terminal = Terminal(ConsoleOutputType.linear);
        auto rtti = RealTimeConsoleInput(&terminal, ConsoleInputFlags.raw);
        loop: while(true) {
                switch(rtti.getch()) {
                        case 'q': // other characters work as chars in the switch
                                break loop;
                        case KeyboardEvent.Key.F1: // also f-keys via that enum
                                terminal.writeln("You pressed F1!");
                        break;
                        case KeyboardEvent.Key.LeftArrow: // arrow keys, etc.
                                terminal.writeln("left");
                        break;
                        case KeyboardEvent.Key.RightArrow:
                                terminal.writeln("right");
                        break;
                        default: {}
                }
        }
}

See other notes at the top of this page:
https://opendlang.org/library/arsd.terminal.KeyboardEvent.html

If you also need to check for things like shift+arrows, that may be possible (depends on your terminal) but will require you write a full event loop with the nextEvent function and it is quite a bit more involved.

https://opendlang.org/library/arsd.terminal.RealTimeConsoleInput.nextEvent.html

Note that if you want to just get a line of text from an editor, that's what Terminal.getline is for, has some features similar to gnu readline. It can be extensively customized as well to add tab complete, syntax highlighting, and more by subclassing LineGetter. You can also run your own event loop and filter the events you forward to the linegetter and custom responding to others for maximum control, but that gets quite involved.

On Friday, 11 April 2025 at 19:59:43 UTC, Adam D. Ruppe wrote:

Thanks for the answer, you really helped much.