Java检测OSX上按住ctrl单击释放了哪个mouseButton

Question

我尝试跟踪 BUTTON1 BUTTON2 和 BUTTON3 是否被按下。

问题是在 OSX 上 ctrl + click 被视为右键单击。因此，如果我有以下内容(使用处理):

boolean mouse_left_pressed;
boolean mouse_right_pressed;

void setup() {
  size(200, 100);  
}

void draw() {
  background(0);
  fill(255);
  text("left: "+mouse_left_pressed, 50, 50);
  text("right: "+mouse_right_pressed, 50, 75);
}


public void mousePressed(MouseEvent e) {
  if (e.getButton() == LEFT) mouse_left_pressed = true;
  if (e.getButton() == RIGHT) mouse_right_pressed = true;
}

public void mouseReleased(MouseEvent e) {
  if (e.getButton() == LEFT) mouse_left_pressed = false;
  if (e.getButton() == RIGHT) mouse_right_pressed = false;
}

如果我执行以下步骤:

• 用鼠标左键单击并按住
• 按住 Control 并按住
• 松开鼠标左键

然后，虽然我不再按下鼠标，但 mouse_left_pressed 的状态仍然为 true。有没有办法获取实际释放的鼠标按钮？

Answer 1

这是因为 OSX 中的 Control+左键单击相当于右键单击。这有点麻烦，但您可以按如下方式检查修饰符:

boolean mouse_left_pressed;
boolean mouse_right_pressed;

void setup() {
  size(200, 100);  
}

void draw() {
  background(0);
  fill(255);
  text("left: "+mouse_left_pressed, 50, 50);
  text("right: "+mouse_right_pressed, 50, 75);
}


public void mousePressed(MouseEvent e) {
  if (e.getButton() == LEFT) mouse_left_pressed = true;
  if (e.getButton() == RIGHT) {
    if (!e.isControlDown()) {
      mouse_right_pressed = true;
    }
    else {
      mouse_left_pressed = true;
    }
  }
}

public void mouseReleased(MouseEvent e) {
  println(e);
  if (e.getButton() == LEFT) mouse_left_pressed = false;
  if (e.getButton() == RIGHT) {
      if (!e.isControlDown()) {
        mouse_right_pressed = false;
      }
      else {
        mouse_left_pressed = false;
      }
  }
}