Terry, thanks for the TkDocs correction.

As you'll note from the attached dlgonmac.png, there's a bit of tweaking needed with regard to geometry management etc. to get the background right.

Now that ttk is ok (so to speak), would you be open to some patches that fix this up, a bit more akin to what you see in the 'query dialog' subsection if you scroll down a bit in http://www.tkdocs.com/tutorial/idle.html#idledialogs

Separately, would you be open to a patch changing things to use the "inline" error handling illustrated on the goto line dialog on that page (i.e. showing error message in query dialog in red vs. popping up an alert)?

Older code for that can be found here btw: https://github.com/roseman/idle/blob/master/querydialog.py