>You can give each record one category. >The categories are stored as part of the record's attribute byte. >This >byte also stores stuff like whether the record is deleted, busy, or >secret.
>You can get the byte with DmRecordInfo(). To set the category, you >must change only the bits that correspond to the category. The >constant >dmRectAttrCategoryMask indicates which bits those are. Once you >have >adjusted the value of the byte without changing non-category bits, >you >can update the record with DmSetRecordInfo(). >I found this to be a hassle, so I wrote convenience functions to >set >and get the category of a record given its index and database >handle. But how do I set the actual names? This is the part that I get confused on? So then if I have a element that I want to be in multible categories or sorted this way, I can't do? >Sure. If you call DmQuickSort() (or DmInsertionSort() or >>DmFindSortPosition()), >you need to pass a callback function of type DmComparF. This >function is >used to compare any two records and put them in the proper order. >And, in >addition to pointers to the records, the function you supply gets >two >SortRecordInfoPtr arguments. These contain the category >information. So, >if you want to sort based on category, you just need to take that >information >into account when comparing records in your comparison function. Well seeing that record can only be in one category doesn't this limit my sort? How about if I want to sort on Name and Type? Or something like that? How would I do this? Would I have to make a custom routine? >> Do if I set these during my application run will effect the current ones? >> Can I save them? >I don't understand either of those questions. :-) Sorry I ment, If I set these categories will they overwrite the current ones? Meaning the default Palm ones? Not sure if they are used by other apps? And can I save them if they are used by other apps so that I can restore them once my app is finished? (sorry was rushing) -- For information on using the PalmSource Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/support/forums/
