显示SWT TableItem的右键菜单？

Question

是否可以使用SWT在表项目上显示右键菜单？菜单对于每个项目都是不同的,例如对于某些行,某些菜单项将被启用,而对于其他项,它们将被禁用.因此,每一行都需要自己的菜单,在设置菜单时我需要一种方法来识别我正在使用哪一行.

有任何想法吗？

Answer 1

听力SWT.MouseDown,如@ user4793956建议,是完全无用的.上下文菜单总是显示,无需调用setVisible(true).相反,您需要取消该SWT.MenuDetect事件,您不 希望弹出菜单.

这对我有用:

// Create context menu
Menu menuTable = new Menu(table);
table.setMenu(menuTable);

// Create menu item
MenuItem miTest = new MenuItem(menuTable, SWT.NONE);
miTest.setText("Test Item");

// Do not show menu, when no item is selected
table.addListener(SWT.MenuDetect, new Listener() {
  @Override
  public void handleEvent(Event event) {
    if (table.getSelectionCount() <= 0) {
      event.doit = false;
    }
  }
});

Answer 2

    table = new DynamicTable(shell, SWT.BORDER | SWT.FULL_SELECTION);        
    table.addMenuDetectListener(new MenuDetectListener()
    {
        @Override
        public void menuDetected(MenuDetectEvent e)
        {                
           int index = table.getSelectionIndex();
           if (index == -1) 
             return; //no row selected

           TableItem item = table.getItem(index);
           item.getData(); //use this to identify which row was clicked.
           //The popup can now be displayed as usual using table.toDisplay(e.x, e.y)              
        }
    });

更多详细信息：http://www.eclipsezone.com/eclipse/forums/t49734.html