[Click] input string in an handler

[remi.clavier at orange-ftgroup.com]

 I experience without proble to input (and verify) integer and long values in a write handler.
But now, I'm not able to read a string.
Each try solve by a "segmentation fault".
It's a exemple to do that...
Somthing like in a tatic function of the handler)

cp
String s;
if (!cp_string(args[5],&s){return errh->error("unable to read the parameter number 4");
... Use s String

Thanks

Rémi