Why we move -1 to set the CURSOR dynamically

eprabinkumar · New User Joined: 07 Mar 2005 Posts: 1

hi all,

i am a new user to the site.....

can anyone tell me why we move -1 to the length attribute of the map field,why not zero

prabin :| [/b]

kingofmf · New User Joined: 02 Mar 2005 Posts: 13 Location: Bangalore

hi prabin,
the reason of your q. is as follows-
Whenever we type something in a field of a physical map,the corredponding L symbolic map element is field with the length,L=0 means it doesn't contains anything,L=-1 means the cursor is positioned on that field. so moving -1 to a L field means to move the cursor to the start of that field in the physical map,this we can do dyanamically in our prog. ie we can dynamically control the position of the cursor fom one field to another field ,