Click-and-dragBNC¹⁷³⁹⁹⁵⁺² 基本例句 单击并拖动 Not only do they save a bit of development time, but they also provide a consistent approach that works well in the presence of other handlers—even other click-and-drag handlers. 它们不仅节省了大量的开发时间，而且提供了一种一致的方法，这种方法同样适合于其他处理程序— 甚至适合其他点击-拖动处理程序。 ibm