With some trepidation about extending this wearisome thread, I thought that I would post for the benefit of the record some information about a solution that I found. It is based on a suggestion made by Kristian Rietveld in the previous incarnation of this thread (which I quoted when I resurrected the thread). He suggested connecting to the "notify::width" signal on each column. He warned that I needed to keep the callback fast and specifically directed that I not write a file in the callback. As writing a file was the purpose for detecting that column width had changed, it did not seem as if his suggestion would work. However, what does work is to use notify::width to set a flag indicating that the file needs to be written. Then catch the button-release event for the treeview that contains the columns. If the flag is set when I get button release, then I write the file (and clear the flag). This solution works almost perfectly, but I do get a spurious write when I first select a row. I hope that someone will be able to glean something useful from this thread so that it can now rest in peace. -- Jeffrey Barish
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