I have a similar issue. I have a client that I designed and built a WordPress site for, using a modified theme a few years ago. I think that may have been the TwentyTen theme. Today he emailed me asking if I could have his blog categories listed as a drop-down menu from the blog link on the main navbar. I know how to add pages as a drop down, by choosing a parent page, but I have no idea how to add a list of his blog categories as a drop-down on his navigation bar.
I thought that maybe custom menus would save me, but under Appearance/Menus, I am seeing the following notice:
The current theme does not natively support menus, but you can use the “Custom Menu” widget to add any menus you create here to the theme’s sidebar.
I looked at the wp_dropdown_categories, but I'm not sure this will do what I need, or if it will, how to implement it. Any advice on how I might go about adding categories as a drop down from the navbar (preferably under the blog menu item on the navbar).
Thanks in advance!