Through MFC realize data collection, in the active control is added to the dialog box (communication control or Teechart), run the program again, after the end of the data collection will produce error as shown in the topic, specific error statements as shown, feels like the pop-up dialog error, bother everybody to help

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Key checking OnInitDialog CTLidarDlg class function, maximum possible mistakes in it,
To set breakpoints, step by step,