从电子应用程序发送密钥？

Question

The only thing I can find related to this is sendInputEvent .

There's a couple problems with it.

1. It seems that it can only be called from the main window thread. I need this to happen when someone clicks a button in the application.

2. It doesn't even seem to work at all even from the main window thread. Example, this doesn't seem to do anything:

code:

setTimeout(function() {
    win.webContents.sendInputEvent({keyCode: 'Tab', type: 'keyDown', modifiers: ['alt']});
}, 3000);

3. I want to send some key strokes after the alt-tab as well, and the API says that the function only works if the window is focused.

It looks like RobotJS might work for this, but it seems a bit heavy-handed for something that is one line in other languages (eg SendKeys.Send ). Also it looks like it requires building it manually. All in all I'm trying to keep my absolute dependency count to a minimum if possible.

Any ideas?

Answer 1

I agree RobotJS is a beast for that task and instead I would go for node-key-sender

I would also not send the ALT-TAB keystroke and instead would use window.hide() or window.minimize . You can read more here: Electron API docs for minimize() and hide()

It has all the features you need and would work even after you unfocus from your electron window. The only caveat is that it uses Java Runtime behind the scenes