Custom Query

I notice today that _arraydisplay() does not disable redraw before adding new items to the listview. This can have a big impact on the performance.

Changing the main loop that adds the listview items to:

GUICtrlSendMsg($hListView, 11, 0, 0);$WM_SETREDRAW
; Fill listview
For $i = 0 To $iUBound
	GUICtrlCreateListViewItem($avArrayText[$i], $hListView)
Next
GUICtrlSendMsg($hListView, 11, 1, 0);$WM_SETREDRAW

For a quick test I ran this small script:

Global $g_aArray[1] = [1]
For $i = 2 To 20
	_ArrayAdd($g_aArray, $i)
Next
Global $g_aArrayCombo = _ArrayCombinations($g_aArray, 7, ",")

_ArrayDisplay($g_aArrayCombo)

My times before and after were:

Before - 6569.94750836973 After - 1508.47224799844

I was noticing how deleting all items it a autoit listview took almost 3x longer than it takes to add them. I came up with the following improvements below.

Time Results:
_GUICtrlListView_DeleteAllItems = 3592.88679294215
_GUICtrlListView_DeleteAllItems2 = 587.438691126462

#include <GuiListView.au3>
Opt('MustDeclareVars', 1)

Local $hGUI = GUICreate('Listview Delete All Items', 250, 400)
Local $ListView = GUICtrlCreateListView('Items', 0, 0, 248, 398)
GUISetState()

For $i = 1 To 10000
	GUICtrlCreateListViewItem($i, $ListView)
Next
Local $time = TimerInit()
_GUICtrlListView_DeleteAllItems($ListView)
ConsoleWrite('_GUICtrlListView_DeleteAllItems = ' & TimerDiff($time) & @LF)

For $i = 1 To 10000
	GUICtrlCreateListViewItem($i, $ListView)
Next
Local $time = TimerInit()
_GUICtrlListView_DeleteAllItems2($ListView)
ConsoleWrite('_GUICtrlListView_DeleteAllItems2 = ' & TimerDiff($time) & @LF)

Do
Until GUIGetMsg() = -3

Func _GUICtrlListView_DeleteAllItems2($hWnd)
	If $Debug_LV Then __UDF_ValidateClassName($hWnd, $__LISTVIEWCONSTANT_ClassName)
	If _GUICtrlListView_GetItemCount($hWnd) = 0 Then Return True
	If IsHWnd($hWnd) Then
		Return _SendMessage($hWnd, $LVM_DELETEALLITEMS) <> 0
	Else
		Local $ctrlID
		Local $tItem = DllStructCreate($tagLVITEM)
		Local $pItem = DllStructGetPtr($tItem)
		Local $LV_Msg = $LVM_GETITEMA
		If _GUICtrlListView_GetUnicodeFormat($hWnd) Then $LV_Msg = $LVM_GETITEMW
		DllStructSetData($tItem, "Mask", $LVIF_PARAM)
		GUICtrlSendMsg($hWnd, 11, 0, 0);$WM_SETREDRAW
		For $index = _GUICtrlListView_GetItemCount($hWnd) - 1 To 0 Step -1
			DllStructSetData($tItem, "Item", $index)
			GUICtrlSendMsg($hWnd, $LV_Msg, 0, $pItem)
			$ctrlID = DllStructGetData($tItem, "Param")
			If $ctrlID Then GUICtrlDelete($ctrlID)
		Next
		GUICtrlSendMsg($hWnd, 11, 1, 0);$WM_SETREDRAW
		If _GUICtrlListView_GetItemCount($hWnd) = 0 Then Return True
	EndIf
	Return False
EndFunc   ;==>__GUICtrlListView_DeleteAllItems

The following script causes an error:

#include <GuiListView.au3>
#include <SQLite.au3>

Output:

C:\Program Files (x86)\AutoIt3\Include\SQLite.au3(2,13) : ERROR: missing separator character after keyword.
#IgnoreFunc __SQLite_Inline_Version
~~~~~~~~~~~~^