Question

javafx鼠标事件中有没有能区分左右键点击的？

如题，如果有请附上代码！谢谢！

Answer 1

MouseEvent 的getButton（）返回一个MouseButton 枚举。

switch 判断一下

MIDDLE

Represents middle (button 2) mouse button.

NONE

Represents no button.

PRIMARY

Represents primary (button 1, usually the left) mouse button.

SECONDARY

Represents seconday (button 3, usually the right) mouse button.

import javafx.stage.*;
import javafx.scene.*;
import javafx.scene.input.*;
import javafx.scene.paint.*;
import javafx.event.*;
import javafx.application.*;

// 右手使用鼠标
public class FXMouseExample extends Application {
  public static void main(String[] args) {
    Application.launch(FXMouseExample.class, args);
  }

  @Override public void start(Stage stage) {
    stage.setTitle("FX Mouse Example");
    Group root = new Group();
    Scene scene = SceneBuilder.create().root(root).width(400).height(300).fill(Color.WHITE)
                                .onMousePressed(new EventHandler<MouseEvent>(){
                                  @Override public void handle(MouseEvent e){
                                    MouseButton button = e.getButton();
                                    switch(button) {
                                      case PRIMARY: System.out.println("Left Button Pressed"); break;
                                      case SECONDARY: System.out.println("Right Button Pressed"); break;
                                      case MIDDLE: System.out.println("Middle Button Pressed"); break;
                                      default:
                                        System.out.println(button);
                                    }
                                  }
                                }).build();
    stage.setScene(scene);
    stage.show();
  }
}