我在我的存储库中定义了这个函数,当我测试它时,它在我的数据库中工作得很好,所有的字段都包含值。 "SUM(january) as january,SUM(february) as february, SUM(march) as march, SUM(april) as april, SUM(may) as may, SUM(june) as june, SUM(july) as july, SUM(august) as august, sum(september) as
我正在创建一个程序,用户可以绘制形状,也可以删除它们(如绘画)。为了获得良好的用户体验,我想将鼠标光标更改为“橡皮擦”来擦除形状。当用户点击"Delete“按钮时,就会发生这种情况。用户完成后,再次通过单击按钮将其返回到旧光标。例如:在此函数中,我想要更改光标。它会在用户单击"Delete“按钮时触发 { if (!toDelete) els