QCustomPlot右键菜单

最新推荐文章于 2025-08-04 11:02:17 发布

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本文介绍了一种在自定义图表中实现右键菜单的方法。通过连接信号与槽，当用户点击图表区域时会弹出一个包含多种图表样式的上下文菜单，如散点图、折线图等。

 connect(d_custom_plot, SIGNAL(mousePress(QMouseEvent*)), this, SLOT(slot_show_region_context_menu(QMouseEvent*)));


void
ChartView::slot_show_region_context_menu(QMouseEvent*event)
{
    if(event->button()==Qt::RightButton)
    {
        QMenu contextMenu(d_custom_plot);

        contextMenu.addAction(d_actions[act_scatter]);
        contextMenu.addAction(d_actions[act_broken_line]);
        contextMenu.addAction(d_actions[act_curve]);
        contextMenu.addAction(d_actions[act_spline]);

        contextMenu.addAction(d_actions[act_red_point]);
        contextMenu.addAction(d_actions[act_blue_point]);
        contextMenu.addAction(d_actions[act_black_point]);

        contextMenu.addAction(d_actions[act_ssCircle]);
        contextMenu.addAction(d_actions[act_ssDisc]);
        contextMenu.addAction(d_actions[act_ssCross]);
        contextMenu.addAction(d_actions[act_ssPlus]);

        contextMenu.exec(QCursor::pos());
    }
}