RE: new subject line:) 'Inconsistent behavior with Database Operations....
Are you sure DmQueryRecord is returning a handle (not NULL). DmQueryRecord will not read records in a resource DB. Also I seem to remember that the handles of ROM DB's (resource DBs for the built-in apps) need to be treated differently, but I don't remember the details (or even if it is true and not something I thought at one time) -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Frank Ableson Sent: Monday, July 31, 2000 20:16 To: Palm Developer Forum Subject: new subject line:) 'Inconsistent behavior with Database Operations" Can anyone offer some insight to the problem outlined below. Thank you. Frank W.F. Ableson [EMAIL PROTECTED] wrote in message news:19178@palm-dev-forum... VoidHand dataH; BytePtr dataP; dataH = DmQueryRecord(mydbref,recindex); // I get a valid (?) VoidHand, which I then use to lock down that record. I just want to read the record... dataP = (BytePtr) MemHandleLock(dataH); this line works for some databases and causes a fatal exception for others?? Any insights? Also, any other function which required the dataH causes the same problem: MemHandleSize, MemHandleFlags, etc. Thanks, Frank W.F. Ableson [EMAIL PROTECTED] http://www.cfgsolutions.com -- For information on using the Palm Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/tech/support/forums/ -- For information on using the Palm Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/tech/support/forums/
Re: new subject line:) 'Inconsistent behavior with Database Operations....
dataH = DmQueryRecord(mydbref,recindex); // I get a valid (?) VoidHand, which I then use to lock down that record. just want to read the record... dataP = (BytePtr) MemHandleLock(dataH); this line works for some databases and causes a fatal exception for others?? Perhaps the handle is already locked? Which probably means that you did not unlock your handles properly. Regards, Mit freundlichem Gruß, Holger Klawitter -- Holger Klawitter+49 (0)251 484 0637 [EMAIL PROTECTED]http://www.klawitter.de/ -- For information on using the Palm Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/tech/support/forums/
new subject line:) 'Inconsistent behavior with Database Operations....
Can anyone offer some insight to the problem outlined below. Thank you. Frank W.F. Ableson [EMAIL PROTECTED] wrote in message news:19178@palm-dev-forum... VoidHand dataH; BytePtr dataP; dataH = DmQueryRecord(mydbref,recindex); // I get a valid (?) VoidHand, which I then use to lock down that record. I just want to read the record... dataP = (BytePtr) MemHandleLock(dataH); this line works for some databases and causes a fatal exception for others?? Any insights? Also, any other function which required the dataH causes the same problem: MemHandleSize, MemHandleFlags, etc. Thanks, Frank W.F. Ableson [EMAIL PROTECTED] http://www.cfgsolutions.com -- For information on using the Palm Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/tech/support/forums/
