--- SU DUY TRINH wrote: > I face with a case:How can I save the > value of a variable in fisrt form and > then use the value in second form that > the value of the variable doesn't > change?ONLY on Code Warrior for Palm > hand-held.
If you declare a global variable, then you can set its value while in one form and retrieve its value in a second form, as long as you don't quit your app. The value won't change unless you do something to change it. SO, how are you declaring the variable? Is the code for handling both forms in a single file, or in two? Show some code. > The second question that I want to ask > about database:I don't know the structure > for database DataViewer(such as: > tc_standford.pdb,...) of Town Compass Neither do I. You'll have to ask the people who make Town Compass. > How are the structure of the PDB databases?. It is different for every database. A "database" on a Palm OS device is just a series of records, where each record can contain up to 64KB (minus a few bytes) of whatever you want to put there. A record can be a different size than other records and can contain very different data than the other records. The OS doesn't impose any logical structure on the database. There are no "fields" like most people imagine in a relational database, unless the application's programmer wants to think of it that way. __________________________________________________ Do You Yahoo!? Send your FREE holiday greetings online! http://greetings.yahoo.com -- For information on using the Palm Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/tech/support/forums/
