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I want to create a new window activated from a button, however while this new window was open, the main window can not be used.

Leonardo Bortolini
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  • http://docs.oracle.com/javase/8/javafx/api/javafx/stage/Stage.html#initModality-javafx.stage.Modality- – James_D Sep 19 '17 at 12:32
  • How can I use it? – Leonardo Bortolini Sep 19 '17 at 12:35
  • Stage s1 = new Stage(); Parent root = FXMLLoader.load(getClass().getResource("FXMLDocument.fxml")); Scene scene = new Scene(root); s1.setScene(scene); s1.show(); This code is in an OnAction function of a button, the main window (where the button is) can not be used while this new window is open – Leonardo Bortolini Sep 19 '17 at 12:44
  • Possible duplicate of [How to create a modal window in JavaFX 2.1](https://stackoverflow.com/questions/10486731/how-to-create-a-modal-window-in-javafx-2-1) – findusl Sep 19 '17 at 13:12

2 Answers2

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When you make your new Stage newStage you have to set the other window as it's owner and then set it to be window modal.

newStage.initOwner(parentStage);
newStage.initModality(Modality.APPLICATION_MODAL);
findusl
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  • in my code of using `primaryStage` in the `start()` method, it turns out that `newStage.initOwner(parentStage)` did not really help of getting the output. not sure if it is due to my computer's settings – Qiyu Zhong Mar 07 '22 at 02:51
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When create new stage and add required objects to it add:

    newStage.initModality(Modality.APPLICATION_MODAL);
    newStage.showAndWait();
Vanja Guliev
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