I assume that the fileopen dialog (most of) my desktop apps use is
provided by xfce. If this is the case...
is there any way to get the pathfilename widget to be the old standard
text based widget, that can be manually written to, and can be
selected/copied/pasted_to? I hate those stupid pathfilename button
widgets... next to useless. Thunar allows you to choose which widget
additionally, it would I'd love to see more fuctionality in the fileopen
the ability to create folders, delete folders and files.
It provided by Gtk+, not Xfce. You can access the patch entry by pressing Ctrl+L. The extra functions depends on the dialog type, defined by the application. Save dialogs have a "create folder" button. Open file dialogs not (why would you want a create folder button?).
Creating files and deleting stuff is not part of such a dialog, but for a file manager. Since it's not connected to thunar in any way, it cannot use a trash etc. Might appear in the feature, but that should be done by gtk, not Xfce.