You may use Data Dynamics ActiveX controls' inside a User Control as long as the User Control is in your compiled application. Due to Visual Basic's licensing limitations, your User Control cannot be used in non-compiled applications (at design time) unless the third party control is also licensed on the machine using the User Control.

If you attempt to distribute the User Control outside of a compiled application (as in a compiled OCX), the contained Data Dynamics' control will display an evaluation message indicating that it is not licensed. Since the User Control cannot create instances of itself without the third party controls' registry license, other developers cannot use the OCX at design time unless they have a valid license. For more information see "Licensing Issues for Controls" in VB's documentation.