So far in my dozen or so released applications, this method has produced no problems.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Adrien Regimbald Sent: Wednesday, October 13, 2004 3:55 PM To: Palm Developer Forum Subject: Re[2]: Dynamically rewriting a label Unfortunately, this is an error prone method. Modifying label text introduces ugly issues: * If you copy a "static string" to the label, you will have problems if the new string is longer than the text you put on the label within the original resource * If you copy a string variable to the label, you will need to ensure that the variable doesn't go out of scope. In C++, this isn't too bad with a class variable, but in C, you end up introducing undesirable global variables for every label If you get lucky, a release ROM may do what you intend if you hit one of these snags, but if you try to debug your code with the emulator, you'll probably get warnings, and if you get unlucky, your application will choke on a user with some friendly message about pointers, chunks, etc. followed by a reset. At the end of the day, labels weren't really made for this purpose. I'd recommend using a read only field instead. Write some wrapper methods for getting/setting the text in fields, and then you'll just need to use a one liner to set the text. Sure, it'll take some effort to create your convenience methods at the start, but once you've done it, it won't blow up in your face like the label method inevitably will. Adrien. Wednesday, October 13, 2004, 2:50:53 PM, you wrote: MB> Hi Adam MB> This is the code I use to change a label text. Text is just a null MB> terminated character array. MB> FormPtr frm = FrmGetActiveForm(); MB> UInt16 myLabelObjectIndex = FrmGetObjectIndex(frm,LabelID); MB> FrmHideObject(frm,myLabelObjectIndex); MB> FrmCopyLabel(frm,LabelID,Text); MB> FrmShowObject(frm,myLabelObjectIndex); MB> -----Original Message----- MB> From: [EMAIL PROTECTED] MB> [mailto:[EMAIL PROTECTED] Behalf Of MB> Ornstein, Adam MB> Sent: Wednesday, October 13, 2004 2:29 PM MB> To: Palm Developer Forum MB> Subject: Dynamically rewriting a label MB> Can anyone point me toward a function that will allow me to redefine a MB> labels text? MB> Thanks -- For information on using the Palm Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/support/forums/ -- For information on using the Palm Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/support/forums/
