Aye Yai Yai! I can’t believe I have to offer up another mea culpa.
In the process of preparing a small demo app to illustrate my form-maximize problem, I discovered something really odd.
I use a FileExplorer replacement program, one I’ve been using for years. It turns out that when I launch a skinned app from this particular FileExplorer program, the maximize problem happens. If I launch my app from the standard Windows FileExplorer, the problem does not happen. Also, if I launch my app from a windows shortcut, the problem does not happen.
Now, puzzling, other commercial apps which I launch from my replacement FileExplorer seem to maximize properly. It’s just my skinned apps which seem to have this problem. But that’s not your problem. It’s a problem with my FileExplorer replacement app.
So, once again, thanks for your quick reply and my apologies for not identifying this earlier.