JPopupMenu 行为 OSX 10.6.7
我的问题是,当我右键单击下面示例中的 JFrame 时,会显示 JPopupMenu,但如果我单击 JFrame 之外的任何位置,菜单不会消失。我必须单击 JFrame 上的某个位置才能将其删除,这不是预期的行为。以下是重现的步骤:
- 从 Eclipse 运行窗口类(出现 JFrame)
- 单击进入 Eclipse 工作区(JFrame 失去焦点并隐藏在 Eclipse 后面)
- 最小化 Eclipse(出现 JFrame)
- 将鼠标悬停在 JFrame 上并右键单击(弹出窗口出现)
- 单击某处(不在 JFrame 或弹出窗口中)。弹出窗口不会消失
我正在运行 OS X 10.6.7 和 Java 完整版本 1.6.0_24-b07-334
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
class test
{
static class window extends JFrame implements MouseListener,
MouseMotionListener
{
JPopupMenu popMenu;
JPanel panel = new JPanel();
Point location;
MouseEvent pressed;
public window()
{
addMouseListener(this);
addMouseMotionListener(this);
JLabel label = new JLabel("JFrame", JLabel.CENTER);
initPopMenu();
add(label);
setUndecorated(true);
setVisible(true);
// setAlwaysOnTop(true);
setLocationRelativeTo(null);
pack();
}
public void initPopMenu()
{
popMenu = new JPopupMenu();
JMenuItem item;
item = new JMenuItem("Title");
item.setEnabled(false);
popMenu.add(item);
popMenu.addSeparator();
item = new JMenuItem("Item One");
popMenu.add(item);
item = new JMenuItem("Item 2");
popMenu.add(item);
item = new JMenuItem("Item 3");
popMenu.add(item);
}
public void mousePressed(MouseEvent e)
{
pressed = e;
int nModifier = e.getModifiers();
if (((nModifier & InputEvent.BUTTON2_MASK) != 0)
|| ((nModifier & InputEvent.BUTTON3_MASK) != 0))
popMenu.show( this, e.getX(), e.getY() );
}
public void mouseClicked(MouseEvent e)
{
}
public void mouseReleased(MouseEvent e)
{
}
public void mouseDragged(MouseEvent me)
{
}
public void mouseMoved(MouseEvent e)
{
}
public void mouseEntered(MouseEvent e)
{
}
public void mouseExited(MouseEvent e)
{
}
}
public static void main(String[] args)
{
window dw = new window();
}
}
My problem is when I right click on the JFrame in the example below, the JPopupMenu shows up but if I click anywhere outside the JFrame, the menu does not disappear. I have to click somewhere on the JFrame to get rid of it which is not the expected behavior. Here are the steps to reproduce:
- Run the window class from Eclipse (JFrame appears)
- Click into the Eclipse workspace (JFrame loses focus and is hidden behind eclipse)
- Minimize Eclipse (JFrame appears)
- Go with your mouse over JFrame and make a right click (Popup appears)
- Click somewhere (Not into JFrame or Popup). The Popup will not disappear
I'm running OS X 10.6.7 and Java full version 1.6.0_24-b07-334
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
class test
{
static class window extends JFrame implements MouseListener,
MouseMotionListener
{
JPopupMenu popMenu;
JPanel panel = new JPanel();
Point location;
MouseEvent pressed;
public window()
{
addMouseListener(this);
addMouseMotionListener(this);
JLabel label = new JLabel("JFrame", JLabel.CENTER);
initPopMenu();
add(label);
setUndecorated(true);
setVisible(true);
// setAlwaysOnTop(true);
setLocationRelativeTo(null);
pack();
}
public void initPopMenu()
{
popMenu = new JPopupMenu();
JMenuItem item;
item = new JMenuItem("Title");
item.setEnabled(false);
popMenu.add(item);
popMenu.addSeparator();
item = new JMenuItem("Item One");
popMenu.add(item);
item = new JMenuItem("Item 2");
popMenu.add(item);
item = new JMenuItem("Item 3");
popMenu.add(item);
}
public void mousePressed(MouseEvent e)
{
pressed = e;
int nModifier = e.getModifiers();
if (((nModifier & InputEvent.BUTTON2_MASK) != 0)
|| ((nModifier & InputEvent.BUTTON3_MASK) != 0))
popMenu.show( this, e.getX(), e.getY() );
}
public void mouseClicked(MouseEvent e)
{
}
public void mouseReleased(MouseEvent e)
{
}
public void mouseDragged(MouseEvent me)
{
}
public void mouseMoved(MouseEvent e)
{
}
public void mouseEntered(MouseEvent e)
{
}
public void mouseExited(MouseEvent e)
{
}
}
public static void main(String[] args)
{
window dw = new window();
}
}
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您可以添加一个windowFocusListener,当窗口失去焦点时隐藏菜单
you can add a windowFocusListener, hide the menu when window lost focus