It appears at least for OS3.* it silently fails. I check Err but it is errNone for both the Set and the Get. I can use the same exact code to modify a more "normal" but such as dmHdrAttrBackup and it works just fine. Is there some other way to Get/Set the Bundle programatically?
On Palm OS 3.5 and earlier, there was no bundle bit -- the OS didn't know about this bit, since there was no expansion manager or VFS. This was added in Palm OS 4 when the Expansion Manager and VFS systems were made a standard part of the OS. I'm not sure if the bundle bit works for the Sony CLIE or HandEra 330 devices that had expansion manager support in OS 3.5; you'd have to test there to be sure.
-- Ben Combee, senior DTS engineer, PalmSource, Inc. Read "Combee on Palm OS" at http://palmos.combee.net/
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