2011/12/14 Caveat <gam...@caveat.demon.co.uk>: > Hi, > > I have a program that compares small binary files (either 1k or 4k so > really quite small files!). > > The program builds the GUI based on whether the user has chosen to view > the data from a Mifare 1k card or a Mifare 4k card. > > Problem is that when building the view for the 4k card, the program > slows down to a crawl. There are 8192 textboxes built in 2 columns of > 64 panels (64 textboxes per panel), with a bold label against each panel > indicating the sector number on the card. This arrangement represents > the sectors on a Mifare 4k card. The side by side column view makes for > a very nice, quick visual check on where the cards differ. > > The slowdown doesn't appear to be linear, that is the more items there > are to add (or have been added), the slower and slower it gets. I get > the impression Gambas may be frantically shuffling things around on the > form, and finding more and more things to shuffle, so taking longer and > longer as each item is added. To see the slowdown for yourself, just > try selecting Mifare 4k in the dropdown under Mifare Card Type, you > don't need to load any files or run Compare... > > I have tried replacing the whole panel/textbox/scrollview thing with a > GridView and it works, a LOT faster, but then you have no possibility to > edit the data (coming in a later version of the program!).
Use tableview instead of gridview !!! > > If anyone can take a look and suggest some improvements, I'd be more > than happy! > > Kind regards, > Caveat > P.S. Project is attached, it is a work in progress...! > > ------------------------------------------------------------------------------ > Cloud Computing - Latest Buzzword or a Glimpse of the Future? > This paper surveys cloud computing today: What are the benefits? > Why are businesses embracing it? What are its payoffs and pitfalls? > http://www.accelacomm.com/jaw/sdnl/114/51425149/ > _______________________________________________ > Gambas-user mailing list > Gambas-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/gambas-user > -- Fabien Bodard ------------------------------------------------------------------------------ Cloud Computing - Latest Buzzword or a Glimpse of the Future? This paper surveys cloud computing today: What are the benefits? Why are businesses embracing it? What are its payoffs and pitfalls? http://www.accelacomm.com/jaw/sdnl/114/51425149/ _______________________________________________ Gambas-user mailing list Gambas-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gambas-user