为特定的 JTable 单元格设置鼠标 cursor

Question

I have a JTable with a set of uneditable cells and I want all the cells in a particular column to have a different mouse cursor displayed whilst the mouse is hovering over them. I am already using a custom renderer and setting the cursor on the renderer component doesn't seem to work (as it does for tooltips).

It does seem to work for editors.

Is this not possible in JTable when your cell is not being edited or am I missing something?

Answer 1

将MouseMotionListener添加到JTable，然后在mouseMoved（）上使用JTable的columnAtPoint（）确定它是哪一列，如果它是您所追踪的特定列，则在JTable上设置setCursor（）。

Answer 2

Here is one way of changing the cursor at a particular column in JTable:

if(tblExamHistoryAll.columnAtPoint(evt.getPoint())==5)
{
    setCursor(Cursor.HAND_CURSOR); 
}
else
{
    setCursor(0);
}

Answer 3

I wanted to only change the cursor when the mouse was over the text in the cell. This was my solution:

private JTable table = ...;

@Override
public void mouseMoved(MouseEvent e) {
    Point point = e.getPoint();

    int column = table.columnAtPoint(point);
    int row = table.rowAtPoint(point);

    Component component = table.getCellRenderer(row, column).getTableCellRendererComponent(table,
            getValueAt(row, column), false, false, row, column);
    Dimension size = component.getPreferredSize();

    Rectangle rectangle = table.getCellRect(row, column, false);
    rectangle.setSize(size);

    if (rectangle.contains(point)) {
        table.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
        return;
    }

    table.setCursor(Cursor.getDefaultCursor());
}