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代码说明：

说明：  一个按键的多次击键组合判别技巧 有时在设计中，往往要用一个按键来输入多种信息。如：单击/双击/三击、短击/长击、 还有各种组合击键方式。可以用以下程序来做。 如果按键闭合时间判断为一次短击 如果按键闭合时间判断为一次长击(A button multiple keystroke combinations sometimes Discriminant skills in design, often using a button to enter a wide range of information. Such as: click/double/triple-clicking, hit a short/long shot, there are various combinations of keystrokes way. The following procedures can be used to do. If the button closure for a short time to judge the hit to determine if the button closure for a long time to hit)