Need help, two layered sort method

[JAFN]

I have an array, many rows, four columns: Title, Genre, Quantity, UPC

I have a listview filling from the array.

I can sort the listview by clicking on the column headers via SortListView()

However when Genre is clicked I would like the Titles under each subset of Genre to be alphabetical as well.

I hope that was clear.

If anyone knows I'd appreciate the help.

I'm not quite the newbie I was last week, but please dumb it down for me.

Thank you.

Edited April 23, 2011 by JAFN

[PsaltyDS]

That is not a trivial operation. You should look at the code for _GUICtrlListView_RegisterSortCallBack() in the GuiListView.au3 UDF.

You would be registering your own custom sort function in place of the _GuiCtrlListView_Sort() that comes with the UDF.

[JAFN]

That is not a trivial operation. You should look at the code for _GUICtrlListView_RegisterSortCallBack() in the GuiListView.au3 UDF.

You would be registering your own custom sort function in place of the _GuiCtrlListView_Sort() that comes with the UDF.

When I cut my teeth on computers COBoL was king, monitors were paper and input was punch cards.

Now my mind is going and my eyes with it. I've recently started coding again as a way to keep my mind active and hopefully prolong these periods of clarity.

All that is explain my I take some prise at having completed this latest hurdle.

The code is specific to my situation and I haven't supplied the array data code. But I wanted to show my solution.

#Include <Array.au3>
#Include <File.au3>

; $Data is a 2D array with 4 columns
; $Genre is the column to index by (0 based)
; $Title is the column to subindex (0 based)

    Local $Genre = 3
    Local $Title = 0
    Local $TempData = $Data
    $Local GenreBox = _ArrayUnique($Data, $Genre) ; each category in Genrebox
    _ArraySort($GenreBox, 0)    ; sort the genres
    _ArraySort($Data, 0, 0, 0, $Genre)

    Local $end = 0
    Local $strt= 0
    For $GenreItem = 1 To UBound($GenreBox)-1
        For $a = $strt to UBound($data)-1
            If $data[$a][3] > $Genrebox[$GenreItem] Then ExitLoop
        Next
        $end = $a - 1
        _ArraySort($Data, 0, $strt, $end, $Title)
        $strt = $a

    Next

_ArrayDisplay($Data, "alpha by genre")

Now I can sleep

[PsaltyDS]

I thought you were trying to tie that to a ListView column header click.

[JAFN]

I thought you were trying to tie that to a ListView column header click.

That part I already had had.