[英]Java JList right-click Linux (Ubuntu 12.04) no menu shown
I'm adding strings to a JLabel and I want to give the possibility to edit or delete them by performing a right click and choosing the option in the context-menu. 我正在向JLabel添加字符串,我想通过右键单击并在上下文菜单中选择选项来提供编辑或删除字符串的可能性。 On Windows 7 and 8 everything works as desired.
在Windows 7和8上,一切正常。 But on Ubuntu 12.04 there is no menu displayed.
但是在Ubuntu 12.04上没有显示菜单。
Here's my code for the MainView: 这是我的MainView代码:
// Add context-menu to list
_List.addMouseListener(new MouseAdapter()
{
public void mousePressed(MouseEvent e)
{
if(SwingUtilities.isRightMouseButton(e))
{
try
{
Robot robot = new Robot();
robot.mousePress(InputEvent.BUTTON1_MASK);
robot.mouseRelease(InputEvent.BUTTON1_MASK);
}
catch(AWTException ae)
{}
}
if(e.isPopupTrigger())
{
doPop(e);
}
}
public void mouseReleased(MouseEvent e)
{
if(e.isPopupTrigger())
{
doPop(e);
}
}
private void doPop(MouseEvent e)
{
JPopupMenu popup = new JPopupMenu();
// Edit Option
if(_EditActionListener != null)
{
JMenuItem editItem = new JMenuItem("Edit");
editItem.addActionListener(_EditActionListener);
popup.add(editItem);
}
// Delete Option
if(_DeleteActionListener != null)
{
JMenuItem deleteItem = new JMenuItem("Delete");
deleteItem.addActionListener(_DeleteActionListener);
popup.add(deleteItem);
}
popup.show(e.getComponent(), e.getX(), e.getY());
}
});
您像调用“ isPopupTrigger()
出弹出菜单”中的示例一样调用isPopupTrigger()
,但setComponentPopupMenu()
可能更容易。
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