Java 鼠标事件 - MouseClicked 工作正常，但 MousePressed 和 MouseReleased 不行

Question

我尝试在类 A 中处理 MousePressed 事件，该类从抽象类 B 扩展并实现接口(interface) C，但我只处理 MouseClicked，MousePressed 不起作用

接口(interface)C

    public interface C {

    public void setText(String msg, Dimension d);

    public void setVisible(boolean b);

    public boolean isVisible();

    public Dimension getSize();

    public void setLocation(Point p);

}

抽象类B

public abstract class B {
public B() {
}

int x, y, w, h, size;

private boolean visible = false;

MouseListener mouseListener = null;

boolean isInner(int p_x, int p_y) {
    ......
}

public void addMouseListener(MouseListener l) {
    mouseListener = l;
}

public void setVisible(boolean b) {
    .....
}

public boolean isVisible() {
    ........
}

public void repaint() {
    .......
}

public void setSize(int size) {
    .......
}

public void setLocation(int x, int y) {
    ........
}

public Dimension getSize() {
    .......
}

public Point getLocationOnScreen() {
    .........
}

}

我的A类:

public class A extends B implements C {

private String _text;

private String[] _lines;

private Color _backgroundColor = new Color(255, 255, 192);

private Color _borderColor = new Color(128, 128, 128);

private Color _foreColor = Color.black;

private int _fontSize = 9;

private boolean inner_viewer = false;

private TextLayout textLayout;

private TextLayout _lstTextLayout[];


public A(String msg, Dimension d, int fontSize, Color foreColor, Color bkColor, Color borderColor) {

    setText(msg, d, fontSize, foreColor, bkColor, borderColor);

    inner_viewer = EXE_NAME.equals(D.get_extensionToolCommand());

    this.addMouseListener(new MouseListener() {

        @Override
        public void mouseReleased(MouseEvent e) {
            System.err.println("Released");
        }

        @Override
        public void mousePressed(MouseEvent e) {
            System.err.println("Pressed");
        }

        @Override
        public void mouseExited(MouseEvent e) {
            System.err.println("Exited");
        }

        @Override
        public void mouseEntered(MouseEvent e) {
            System.err.println("Entered");
        }

        @Override
        public void mouseClicked(MouseEvent e) {
            System.err.println("Click");
        }
    });
}

@Override
public void setText(String msg, Dimension d, int fontSize, Color foreColor, Color bkColor, Color borderColor) {
    this._fontSize = fontSize;
    this._foreColor = foreColor;
    this._backgroundColor = bkColor;
    this._borderColor = borderColor;
    this._text = msg;
    this.w = d.width;
    this.h = d.height;
    this._lines = _text.split("\n");
    this._lstTextLayout = new TextLayout[_lines.length];
}

@Override
public void setLocation(Point p) {
    super.setLocation(p.x, p.y);
}

public void paint(Graphics g) {
    ................
}}

我不明白“为什么只有 MouseClicked 工作正常，所有其他鼠标事件都不起作用”。

感谢您的所有回答。

Answer 1

您所声称的情况是不可能的。 MouseClicked 是 MousePressed 和 MouseReleased 的弟弟...它本身并不是一个系统事件，而是由 MousePressed 和 MouseReleased 之间的计时生成的合成事件。要进一步证明这一点，请查看 java.awt.Robot... 看到其中的 MouseClicked 方法吗？不，因为没有。

不可能。案件已结