InsertRadioItem problem

[Mike Fahl]

I'm trying to build a group of menu items from scratch by *inserting*  
items into an already existing menu. However, when I subsequently try  
to call Check on one of those items, I run into an assert inside  
Check due to the fact that m_radioGroup.start isn't set. Looking at  
the code (2.8.7), m_radioGroup.start appears to be set only through  
DoAppend, and not through DoInsert on the menu.

Is this supposed to work? Since there is a specific InsertRadioItem  
function, one would be led to believe so, but I can't seem to figure  
it out.

Mike