How to prevent "internal" controls from being used externally?

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Hi,

I am writing some composite controls for a mobile device. Starting off with
a usercontrol, I then embed child control on it which will then be consumed
by other. The child controls are also custom and intended only for use on
the usercontrol (meaning I never want the user to explicitly add the child
controls to any of their forms).

What are some of the ways that I can prevent the user from using it on their
forms? On specific thing that I am looking at is preventing it from
appearing in the toolbox, but in the .xmta file, the ToolboxItem element is
not supported in the schema, which is what I beleive the full framework uses
for this purpose.

Any suggestions?

 

[dbgrick]

Why not add the code directly to your application and then mark the control
classes to internal?

Regards,
Rick D.
Contractor