Thank yyou for suggesting the FILE WIDGET and DIALOG.
I’ve tested these again – it’s a few years since I did so.
There seem to be two shortomings with these in my application, if I have understood them correctly.
1. I can’t find a way to select multiple files so I can initiate a batch process.
As I see it, I would have to select and load files one at a time before commencing the batch process.
HTBFileopen.dll does allow multiple selections and simply concatenates them into the string which it returns.
2. I haven’t been able to find a way to customise the contents of the file type selection box.
If either or both of these can be achieved then this would indeed be a rather nicer solution than the dll.
Thank you again.