GTK+ Forums

It possible to autorestore previous entry in gtk_entry if new entry is invalid for same condition?

Example:

I want to entry in gtk_entry only alphabetic chars
If someone try to entry numeric char, gtk_entry to autorestore previous alphabetic char.

Thanks

This is not inbuilt into GtkEntry as at its base level all input is valid.
If you want to define a GtkEntry that is text only you will need to code this additional functionality in yourself (the string validator and storage of the old value). If you are doing this repeatedly then you may want to subclass GtkEntry as a custom widget.
Be careful; however, as a character text only widget can deem as invalid text that is more appropriately written with numerical values; e.g. in formal English writing, large values are written numerically rather than in full.