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So I want to for example press CTRL + Alt + D and something happens. And that without a window from javafx (which I use). So then I can press this key combination everytime (if my application is on). Is that possible? If yes how would I do that?

Jan Tennert
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    Maybe this can help you: https://stackoverflow.com/questions/79658/react-on-global-hotkey-in-a-java-program-on-windows-linux-mac *Spoiler* you need JNI. – jmizv Sep 11 '20 at 09:18
  • thanks I will try that – Jan Tennert Sep 11 '20 at 09:23
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    Does this answer your question? [React on global hotkey in a Java program on Windows/Linux/Mac?](https://stackoverflow.com/questions/79658/react-on-global-hotkey-in-a-java-program-on-windows-linux-mac) – Scratte Sep 11 '20 at 16:50
  • yes that worked – Jan Tennert Sep 11 '20 at 18:33
  • but if I want to change anything from javafx I need Platform.runLater and that is only called one time (if I press once its working but the second time nothing happens) – Jan Tennert Sep 11 '20 at 18:44

1 Answers1

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Add to your primaryStage scene something like this:

primaryStage.getScene().setOnKeyPressed(keyEvent -> {
    KeyCombination combination = new KeyCodeCombination(KeyCode.D,KeyCombination.CONTROL_DOWN,KeyCombination.ALT_DOWN);
    if (combination.match(keyEvent)) {
        System.out.println("Ctrl+Alt+D was pressed");
    }
});
Andrzej Pazurkiewicz
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