# Function Reference

# _GUICtrlListView_GetItemGroupID

Gets the item group ID

#include <GuiListView.au3>
_GUICtrlListView_GetItemGroupID ( $hWnd, $iIndex )

## Parameters

$hWnd | Control ID/Handle to the control
$iIndex | 0-based index of the item

## Return Value

Returns the item group ID.

## Related

_GUICtrlListView_SetItemGroupID

## Example

    #include <GUIConstantsEx.au3>
    #include <GuiImageList.au3>
    #include <GuiListView.au3>
    #include <MsgBoxConstants.au3>

    Example()

    Func Example()
        GUICreate("ListView Get/Set Item Group ID (v" & @AutoItVersion & ")", 400, 300)
        Local $idListview = GUICtrlCreateListView("", 2, 2, 394, 268)
        GUISetState(@SW_SHOW)

        ; Set ANSI format
    ;~     _GUICtrlListView_SetUnicodeFormat($idListview, False)

        ; Load images
        Local $hImage = _GUIImageList_Create()
        _GUIImageList_Add($hImage, _GUICtrlListView_CreateSolidBitMap($idListview, 0xFF0000, 16, 16))
        _GUIImageList_Add($hImage, _GUICtrlListView_CreateSolidBitMap($idListview, 0x00FF00, 16, 16))
        _GUIImageList_Add($hImage, _GUICtrlListView_CreateSolidBitMap($idListview, 0x0000FF, 16, 16))
        _GUICtrlListView_SetImageList($idListview, $hImage, 1)

        ; Add columns
        _GUICtrlListView_AddColumn($idListview, "Column 0", 100)
        _GUICtrlListView_AddColumn($idListview, "Column 1", 100)
        _GUICtrlListView_AddColumn($idListview, "Column 2", 100)

        ; Add items
        _GUICtrlListView_AddItem($idListview, "Row 0: Col 0", 0)
        _GUICtrlListView_AddSubItem($idListview, 0, "Row 0: Col 1", 1)
        _GUICtrlListView_AddSubItem($idListview, 0, "Row 0: Col 2", 2)
        _GUICtrlListView_AddItem($idListview, "Row 1: Col 0", 1)
        _GUICtrlListView_AddSubItem($idListview, 1, "Row 1: Col 1", 1)
        _GUICtrlListView_AddItem($idListview, "Row 2: Col 0", 2)

        ; Build groups
        _GUICtrlListView_EnableGroupView($idListview)
        _GUICtrlListView_InsertGroup($idListview, -1, 1, "Group 1")
        _GUICtrlListView_InsertGroup($idListview, -1, 2, "Group 2")
        _GUICtrlListView_SetItemGroupID($idListview, 0, 1)
        _GUICtrlListView_SetItemGroupID($idListview, 1, 2)
        _GUICtrlListView_SetItemGroupID($idListview, 2, 2)

        ; Display Item 3 group ID
        MsgBox($MB_SYSTEMMODAL, "Information", "Item 3 Group ID: " & _GUICtrlListView_GetItemGroupID($idListview, 2))

        ; Loop until the user exits.
        Do
        Until GUIGetMsg() = $GUI_EVENT_CLOSE
        GUIDelete()
    EndFunc   ;==>Example