Send a keyboard button press through a js function

[ericoporto]

Hi,

I would like to send a key like f12 or alt+enter to my Emscripten built engine from a JS function. The reason is these are buttons that do special things in the engine, but they aren't easily available on the phones, so I would like to place a little overlay with some screen buttons in the html that would send these button presses to the engine.

Is there an easy way to leverage the SDL2 port to do this?

[Daft-Freak]

Should be able to use dispatchEvent from JS, I think:

document.getElementById("canvas").dispatchEvent(new KeyboardEvent("keydown", {keyCode: 0x7B/*F12*/}));
//... and/or "keyup"

(Currently still relying on the old keyCode property)

Might need to manually keydown/up Alt, instead of using altKey though...

[ericoporto]

Thanks, that solves for me!

[ericoporto]

Turns out this dispatchEvent didn't work. :/

The below works for some keys, but I can't find a way to pass the alt key.

window.dispatchEvent(new KeyboardEvent("keydown", {keyCode: 0x7B/*F12*/}));

What should be the alt keyCode?