Close event in Java FX when close button is pressed

问题

Is there any event handler present in Java FX, if i close a window directly bt pressing [X] button on Top right side. Which events gets fire in this case ? Nothing is working so far , neither setOnHiding not setOnCloseRequest()

Please help.

回答1:

Try this one

import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.scene.text.Text;
import javafx.stage.Stage;
import javafx.stage.WindowEvent;

public class Main extends Application {

    @Override
    public void start(Stage stage) {
        Text text = new Text("!");
        text.setFont(new Font(40));
        VBox box = new VBox();
        box.getChildren().add(text);
        final Scene scene = new Scene(box,300, 250);
        scene.setFill(null);
        stage.setScene(scene);
        stage.show();
        stage.setOnCloseRequest(new EventHandler<WindowEvent>() {
          public void handle(WindowEvent we) {
              System.out.println("Stage is closing");
          }
      });        
        stage.close();

    }

    public static void main(String[] args) {
        launch(args);
    }
}

Source Stage close event : Stage « JavaFX « Java

来源：https://stackoverflow.com/questions/38371117/close-event-in-java-fx-when-close-button-is-pressed