How to add editable ComboBox in Vista Common Item Dialog?

Question

Vista introduced the new Common File Dialogs for opening and saving files that replace the old common file dialogs. Custom controls can be added using the simple IFileDialogCustomize interface . One of them is a standard ComboBoxone that cannot be edited. Is there a way to create an editable ComboBoxor modify an existing one (adding a style CBS_DROPDOWN)?

Answer 1

Sorry, you can’t. There is no guarantee that the controls you add with IFileDialogCustomizeare Win32 controls. (And in fact, I believe that this is not so.) Since they are not Win32 controls, there is nothing to establish a style CBS_DROPDOWN. Unfortunately.