事件过滤器，对窗口里的鼠标箭头进行实时跟踪。-Event filter, real-time tracking of the window where the mouse arrow.

快速滤光镜效果,窗体边框设为0,Me.ShowInTaskbar = True,按F5执行 改编自：VB鼠标穿透 看得见摸不着的窗体-Quick filter effect form the border is set to 0, Me.ShowInTaskbar = True Press F5 to run Adapted from: VB mouse through visible intangible form