让MSHFlexGrid支持输入、编辑，这是一个老生常谈的话题，但我认为本示例是类似话题中最出色的一个，欢迎高手们批评指正。 -MSHFlexGrid support for input, editing, this is a mundane topic, but I think this example is similar to the topic of the most outstanding one, welcome the expert who criticized the correction.