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VB6 form into the Activex control, control is selected, any Key pressed, form KeyDown twice

Time:11-22

Do it himself a inherited COleControl container control, put it in the layout of VB6 Form (Form KeyPreview=True) above, after the operation, the mouse to click your container control, then press any Key on the keyboard, VB6Form KeyDown time carried out twice,
What a great god know what's going on?
Doing this control is a container control, arguably, should not be the focused, but now is not why, after click, actually become active control,
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