|Simple dialog to enter a single string value.|
|The dialog is presented with a single field. The use must enter something. When he hits accept, the ok functag is called. If the value is not appropriate, the ok functag sets reject=true and the edit session continues.|
|void ok (const char *val, bool &reject, int &retcode)|
The value must be processed and validated. If the value is not appropriate, an error message must be presented and reject must be set to true.