Now, I have a another question. I want create a new Tabcontrol. For each
tabpage add, I want a Panel in Tabpage created in design-time. It's possible ?
In addition, since your design-time control is really a full framework
assembly, here are a few newsgroups that you may want to google search for
some additional information.
microsoft.public.dotnet.framework.windowsforms.controls
microsoft.public.dotnet.framework.windowsforms.designtime