Help with modal dialog

[Matt Postiff <postiffm comcast net>]

I have a working dialog that displays a system log file in "real time"
in my gtk2 Windows/Linux app. It is modal.

What I want to do is make it non-modal so it can float off to the side
of my app and always be visible while I work in the app.

I have tried to gtk_window_set_modal to FALSE and also set <property
name="modal">False</property> in the gtkbuilder xml.

A snippet of the code and xml is at http://pastebin.com/mACPZP85

Any ideas what I'm doing wrong? Thank you.

(I twice tried sending an email to the list with the code snippet
included, but it was not forwarded to the list members for some reason.)

Matt