Slam Selected Items Into an Array

Slam Selected Items Into an Array

Use this code to retrieve all selected list items in a multiselect-style listbox in one API call. It’s a lot easier than iterating through a large list using For…Next. This code works against both normal and checkbox-style lists:

 Private Declare Function SendMessage Lib "user32" Alias _	"SendMessageA" (ByVal hWnd As Long, ByVal wMsg _	As Long, ByVal wParam As Long, lParam As Any) As LongPrivate Const LB_GETSELCOUNT = &H190Private Const LB_GETSELITEMS = &H191Private Sub Command1_Click()	Dim numSelected As Long	Const LB_ERR = -1	Dim r As Long	Dim i As Integer	'get the number of items selected.	'If the listbox is single-select style,	'numSelected will return -1 (LB_ERR).	'If the listbox is multiselect style,	'and nothing is selected, numSelected	'returns 0. Otherwise, numSelected returns	'the number selected (ala List1.SelCount)	numSelected = SendMessage(List1.hWnd, LB_GETSELCOUNT, _		0&, ByVal 0&)	'debug ...	Debug.Print numSelected; " items selected:"	Debug.Print "index", "item"	If numSelected <> LB_ERR Then		'dim an array large enough to hold		'the indexes of the selected items		ReDim sSelected(1 To numSelected) As Long		'pass the array so SendMessage can fill		'it with the selected item indexes		Call SendMessage(List1.hWnd, LB_GETSELITEMS, _			numSelected, sSelected(1))		'debug ...		'print out the items selected		'note that their index is 0-based		For i = 1 To numSelected			Debug.Print List1.List(sSelected(i))		Next	End IfEnd Sub
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