这是VB6中用户控件，关于数据波形图显示，在数据占满后会向左移，还存放历史数据等候调阅，实际工程中用于做后台监控-This is the VB6 user controls on data waveform display, after the data will be filled to the left, still waiting for access to historical data is stored, the actual project to make background monitoring