I removed both of the files, made my changes to the article, added the file back, clicked the insert link icon according to the FAQ and still when previewing I get "No download file was specified.". Here's the HTML of the link: <ul class="download"> <li><a href="CompleteReadOnlyComboBox.zip">Download source and test project</a></li></ul>

Features. Undocumented features, if you must. cheers, Chris Maunder The Code Project | Co-founder Microsoft C++ MVP

The only thing I can suggest would be the documentation on WM+_XBUTTONDOWN[^]. Since the values in the Params are the result of the combining of smaller fields into a 32-bit value, you have to do some math to figure out what each of these fields means. A guide to posting questions on CodeProject[^] Dave Kreskowiak Microsoft MVP Visual Developer - Visual Basic      2006, 2007, 2008

I was staying away from userControl.Controls so I would not have to recursively loop through container controls (a group box will appear in the .Controls but you have to walk through it's controls to get all the textboxes and such). I did try FlattenHierarchy and it didn't make any difference. What I didn't try was looking a the fields of .BaseType. Thanks for the reply, Tom

Excellent. That's much more elegant. I believe my suggestion was a carry-over from 1.0 days. I know I did something like that (probably for a property grid) a long time ago.

This seems to be the answer: _ Public Property DataSource() As Object ... End Property I earlier had it coded AttributeProvider("IListSource")