JTable可点击列标题 [英] JTable clickable column header

问题描述

我正在尝试创建一个可点击的列标题（以便每次点击时调用一个方法）。

链接到图片（因为我没有10个声望） http://img156.imageshack.us/img156/5764/clickablecolumn.png

列标题为红色矩形。

到目前为止，我所做的只是在任何列字段（例如James，Benny-G和Rokas的列字段）被按下时做出响应。
代码：

I am trying to make a clickable column header (so that a method would be called whenever one's clicked).
link to image (since I don't have 10 reputation yet) http://img156.imageshack.us/img156/5764/clickablecolumn.png
The column header is in red rectangle.
What I've done so far is responding whenever any column field (such as the one with James, Benny-G and Rokas) is pressed. The code:

public void mouseClicked(MouseEvent e)
    {
        System.out.println("Mouse clicked");
        TableColumnModel cModel = table.getColumnModel();//cModel - column model
        int selColumn = cModel.getColumnIndexAtX(e.getX());//gets the selected column by clicked x coordinate
    }

推荐答案

您想将鼠标侦听器添加到表头，由 JTableHeader 表示：

You want to add a mouse listener to the table header, which is represented by JTableHeader:

JFrame frame = new JFrame();
frame.getContentPane().add(new JScrollPane(new JTable(4, 3) {
  {
    getTableHeader().addMouseListener(new MouseAdapter() {
      @Override
      public void mouseClicked(MouseEvent mouseEvent) {
        int index = convertColumnIndexToModel(columnAtPoint(mouseEvent.getPoint()));
        if (index >= 0) {
          System.out.println("Clicked on column " + index);
        }
      };
    });
  }
}));

frame.pack();
frame.setVisible(true);

这篇关于JTable可点击列标题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！