FuryCell Posted November 11, 2009 Share Posted November 11, 2009 What is the fastest way to sort a listview? The listview can often have over 1000 items (it is a list of songs from an iTunes Library) and all the solutions I have been able to find are very slow. HKTunes:Softpedia | GoogleCodeLyricToy:Softpedia | GoogleCodeRCTunes:Softpedia | GoogleCodeMichtaToolsProgrammer n. - An ingenious device that turns caffeine into code. Link to comment Share on other sites More sharing options...
Mat Posted November 11, 2009 Share Posted November 11, 2009 It all comes down to how fast your function for comparing 2 items is... If you can find a very fast method for that then you should be ok. http://msdn.microsoft.com/en-us/library/bb775131(VS.85).aspx Mat AutoIt Project Listing Link to comment Share on other sites More sharing options...
FuryCell Posted November 11, 2009 Author Share Posted November 11, 2009 (edited) It all comes down to how fast your function for comparing 2 items is... If you can find a very fast method for that then you should be ok.http://msdn.microsoft.com/en-us/library/bb775131(VS.85).aspxMatMaybe using machine code or a dll from within autoit is the way to go. Anyone with assembly skills willing to give it a go? Edited November 11, 2009 by P5ych0Gigabyte HKTunes:Softpedia | GoogleCodeLyricToy:Softpedia | GoogleCodeRCTunes:Softpedia | GoogleCodeMichtaToolsProgrammer n. - An ingenious device that turns caffeine into code. Link to comment Share on other sites More sharing options...
Moderators Melba23 Posted November 11, 2009 Moderators Share Posted November 11, 2009 P5ych0Gigabyte, In the past, when dealing with very large numbers of LV items, I found the quickest way was manipulate them was to keep all the items in a suitably dimensioned array. Then I could sort, add, delete as required and when I needed to redisplay the LV I would completely delete the LV contents before reloading the amended array into the LV. I also found that hiding and then re-showing the LV either side of the reload worked well to reduce any flicker. Happy to go into more detail if required. M23  Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind Open spoiler to see my UDFs: Spoiler ArrayMultiColSort ---- Sort arrays on multiple columnsChooseFileFolder ---- Single and multiple selections from specified path treeview listingDate_Time_Convert -- Easily convert date/time formats, including the language usedExtMsgBox --------- A highly customisable replacement for MsgBoxGUIExtender -------- Extend and retract multiple sections within a GUIGUIFrame ---------- Subdivide GUIs into many adjustable framesGUIListViewEx ------- Insert, delete, move, drag, sort, edit and colour ListView itemsGUITreeViewEx ------ Check/clear parent and child checkboxes in a TreeViewMarquee ----------- Scrolling tickertape GUIsNoFocusLines ------- Remove the dotted focus lines from buttons, sliders, radios and checkboxesNotify ------------- Small notifications on the edge of the displayScrollbars ----------Automatically sized scrollbars with a single commandStringSize ---------- Automatically size controls to fit textToast -------------- Small GUIs which pop out of the notification area  Link to comment Share on other sites More sharing options...
Mat Posted November 11, 2009 Share Posted November 11, 2009 Melba, there are also memory considerations, 1000+ ints is no small number. But I will agree with you that doing it in the memory should be (a lot) faster. I know exactly where this thread is heading, because this is not the first time Psycho has asked this... Someone wrote a UDF that uses machine coding, but the download link is broken. Mat AutoIt Project Listing Link to comment Share on other sites More sharing options...
FuryCell Posted November 11, 2009 Author Share Posted November 11, 2009 P5ych0Gigabyte,In the past, when dealing with very large numbers of LV items, I found the quickest way was manipulate them was to keep all the items in a suitably dimensioned array. Then I could sort, add, delete as required and when I needed to redisplay the LV I would completely delete the LV contents before reloading the amended array into the LV. I also found that hiding and then re-showing the LV either side of the reload worked well to reduce any flicker.Happy to go into more detail if required. M23Sounds like an interesting idea. I'm going to give that a try. HKTunes:Softpedia | GoogleCodeLyricToy:Softpedia | GoogleCodeRCTunes:Softpedia | GoogleCodeMichtaToolsProgrammer n. - An ingenious device that turns caffeine into code. Link to comment Share on other sites More sharing options...
FuryCell Posted November 11, 2009 Author Share Posted November 11, 2009 Melba, there are also memory considerations, 1000+ ints is no small number. But I will agree with you that doing it in the memory should be (a lot) faster.I know exactly where this thread is heading, because this is not the first time Psycho has asked this... Someone wrote a UDF that uses machine coding, but the download link is broken.MatI think the one with the broken link actually used vbscript. HKTunes:Softpedia | GoogleCodeLyricToy:Softpedia | GoogleCodeRCTunes:Softpedia | GoogleCodeMichtaToolsProgrammer n. - An ingenious device that turns caffeine into code. Link to comment Share on other sites More sharing options...
FuryCell Posted November 11, 2009 Author Share Posted November 11, 2009 (edited) I found some C source code for the listview sort callback. What would I need to do to compile this as a dll? http://www.daniweb.com/forums/thread10382.html# Edited November 11, 2009 by P5ych0Gigabyte HKTunes:Softpedia | GoogleCodeLyricToy:Softpedia | GoogleCodeRCTunes:Softpedia | GoogleCodeMichtaToolsProgrammer n. - An ingenious device that turns caffeine into code. Link to comment Share on other sites More sharing options...
picaxe Posted November 12, 2009 Share Posted November 12, 2009 I use a version of this listview array display sort by randallc, siao & others. Column sort time for 28 column x 3711 row listview is about 370ms. Link to comment Share on other sites More sharing options...
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