Hi PHL_09,

In this situation Interop Usercontrol handles this windows message alone, not let VB6 Form handle this message.

As far as I know, you have two options:

1. In WndProc function of Interop user control, you capture the keyboard message and use SendMessage to send keyboard messages to VB6 form to process first. Then let Inteop usercontrol handle this kind of messages.

2. You can define the events in Interop usercontrol for those unfired events required by VB6 form. Then handle these events in VB6 end to implement your requirement.

Please try this and feel free to post back when you have any further issues.

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Best regards,
Riquel
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