javafx 面板空白处右键菜单

约定不等于承诺〃 2023-10-15 01:24 8阅读 0赞

import javafx.application.Application;
    import javafx.scene.Scene;
    import javafx.scene.control.ContextMenu;
    import javafx.scene.control.MenuItem;
    import javafx.scene.input.MouseButton;
    import javafx.scene.layout.Pane;
    import javafx.stage.Stage;
    
    public class Test1 extends Application {
    
        public static void main(String[] args) {
            launch(args);
        }
    
        @Override
        public void start(Stage primaryStage) {
            primaryStage.setTitle("Right Click Menu Example");
    
            // 创建根容器
            Pane root = new Pane();
    
            // 创建场景
            Scene scene = new Scene(root, 300, 200);
    
            // 创建右键菜单
            ContextMenu contextMenu = new ContextMenu();
    
            // 创建菜单项
            MenuItem menuItem1 = new MenuItem("Option 1");
            MenuItem menuItem2 = new MenuItem("Option 2");
    
            // 设置点击事件监听器
            menuItem1.setOnAction(event -> System.out.println("Option 1 selected."));
            menuItem2.setOnAction(event -> System.out.println("Option 2 selected."));
    
            // 将菜单项添加到右键菜单
            contextMenu.getItems().addAll(menuItem1, menuItem2);
    
            // 监听场景上的鼠标右键点击事件
            scene.addEventHandler(javafx.scene.input.MouseEvent.MOUSE_CLICKED, event -> {
                if (event.getButton() == javafx.scene.input.MouseButton.SECONDARY) {
                    contextMenu.show(root, event.getScreenX(), event.getScreenY());
                } else if (event.getButton() == MouseButton.PRIMARY) {
                    contextMenu.hide();
                }
            });
    
            // 设置舞台的场景
            primaryStage.setScene(scene);
    
            // 显示舞台
            primaryStage.show();
        }
    }