Why does MouseMove event of a PictureBox seem to be fired continuously even if the mouse is not moved? I have tried the following codes to prove it (by simply creating a new form with a PictureBox and a Label on it).Why does MouseMove event of a PictureBox seem t
阅读背景：
即使不移动鼠标，在图片框中的MouseMove事件也会连续地触发
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