看起来简单的应用！(难)

Question

1、
            int offsetX = 0, offsetY = 0;
            public void mousePressed(MouseEvent e)
            {
                        offsetX = e.getX();
                        offsetY = e.getY();
            }            public void mouseDragged(MouseEvent e)
            {
                        offsetX = e.getX();
                        offsetY = e.getY();
                        int x += mouseX - offsetX;
                        int y += mouseY - offsetY;
                        setLocation(x, y);
            }2、
            public void paint(Graphics g)
            {
                        g.drawString(getText(), 0, 0);
            }

Answer 1

public void mouseDragged(MouseEvent e)
            {
                        offsetX = e.getX();
                        offsetY = e.getY();
                        int x += mouseX - offsetX;
                        int y += mouseY - offsetY;
                        setLocation(x, y);
            }应该是：
            public void mouseDragged(MouseEvent e)
            {
                        mouseX = (int)e.getX();
                        mouseY = (int)e.getY();
                        int x = getLocation().x;
                        int y = getLocation().y;
                        x += mouseX - offsetX;
                        y += mouseY - offsetY;
                        setLocation(x, y);
            }

Answer 2

应该是这样吧：
public void mouseDragged(MouseEvent e)
{
mouseX = (int)e.getX();
mouseY = (int)e.getY();
int x = getLocation().x;
int y = getLocation().y;
x += mouseX ;
y += mouseY ;
setLocation(x, y);
}
这里mouseX,mouseY是什么意思？

Answer 3

            int offsetX = 0, offsetY = 0;
            public void mousePressed(MouseEvent e)
            {
                        //保存鼠标移动前的位置
                        offsetX = e.getX();
                        offsetY = e.getY();
            }            public void mouseDragged(MouseEvent e)
            {
                        //鼠标移动时的位置
                        int mouseX = (int)e.getX();
                        int mouseY = (int)e.getY();                        //控件当前位置
                        int x = getLocation().x;
                        int y = getLocation().y;
  
                        //当前位置与位移相加，即是移动后的位置
                        x += (mouseX - offsetX);
                        y += (mouseY - offsetY);
                        setLocation(x, y);
            }

Answer 4

好像不要offsetX,offsetY也行啊！
对呢，第二个问题还没解决呢，好像按你这样也不行啊。
我在jToggleButton上写了几个字，只想让这几个字示出来，而背景隐藏掉！再言谢！！！

Answer 5

JToggleButton b1 = new JToggleButton()
            {                  public void paint(Graphics g)
                  {
                        g.setColor(new Color(178, 178, 178));
                        g.drawString("testString", 5, 5);
                  }
            };