Restore $windowproperties values

Author: p.lovati@pokerspa.it (PaoloLovati)

Hi All,

I'm not able to restore the window property BACKIMAGE to the default value (none) the window had at the moment of instantiation, after having set it up to a glyph or file using $windowproperties.
With other properties, like BACKCOLOR, this operation can be done.

Does anybody tried the same?
Thanks.

Paolo Lovati