I doubt they'll every add it, since the existing API is capable of doing the job.
Besides that, it's possible to simulate a "text callback" using the existing API.. Simply use the userDataP to hold your function pointer, then you only need to write one ListDraw function (which then calls your "text callback"). Easy huh?.. Take about 15 minutes to write it the first time, stick it into your standard "library" code, get the exact functionality you need, and it only adds 10 lines of code to your whole project. Alan "James" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > > I really, really wish Lists could have an application-defined callback to > retrieve the text for a specified item. > > Here's how I envision it would work: > > typedef Char* (*ListGetSelectionTextFuncType)(const ListType* listP, Int16 > itemNum, void* userDataP); > > void LstSetListChoices(ListType* listP, Char** itemsText, Int16 numItems, > ListGetSelectionTextFuncType getTextFunc, void* > userDataP); > > getTextFunc would be optional; if NULL, all Lst functions would try to retrieve > strings directly from itemsText. > > The advantage of this system would be that: > 1. there's less need to use a custom drawing function; I'd bet that most > lists with custom-drawn items are purely textual, so the system now > could draw the list items itself > 2. when dealing with pop-up triggers to such lists, the system could > update the trigger label itself > 3. it would allow incremental-search to be used with such lists > > (While I'm wishing, I wish you could set a callback for a pop-up list's event > handler too.) > > #3 is the most important to me. 1 and 2 are not that much extra work with the > current system, but the combination of incremental-search's dependence on a > valid itemsText pointer and the lack of ability to set your own list event > handler makes it really hard to implement 3 yourself. Currently if you want > incremental-search with a dynamically generated list, it's easiest to make > copies of all your strings and suffer the additional memory usage. > > Obviously there's not much that can be done about this for existing versions of > Palm OS, but hopefully this stuff can be changed for Palm OS 6 if it hasn't > been already... > > __________________________________ > Do you Yahoo!? > Yahoo! SiteBuilder - Free, easy-to-use web site design software > http://sitebuilder.yahoo.com > > -- For information on using the Palm Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/support/forums/
