ListView + ImageList for GroupHeader ( LVSIL_GROUPHEADER )

[mLipok]

In this document:
https://learn.microsoft.com/en-us/windows/win32/controls/lvm-setimagelist

 

I saw that LVSIL_GROUPHEADER can be used.

After a quick overview and as far as I can see there is no way to use function like _GUICtrlListView_**ImageList() for GroupHeader.
Anybody can confirm that ?

 

[mLipok]

My research  led me to:

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

_Example()

Func _Example()

    Local $hGUI = GUICreate("LVSIL_GROUPHEADER Example", 500, 300)
    #forceref $hGUI

    Local $idListView = GUICtrlCreateListView("Name|Value", 10, 10, 480, 250)
    Local $hListView = GUICtrlGetHandle($idListView)

    ; Enable group view
    _SendMessage($hListView, $LVM_ENABLEGROUPVIEW, True, 0)

    ; Create ImageList for LVSIL_GROUPHEADER
    Local $hImageList = _GUIImageList_Create(16, 16)

    Local $hIcon = _WinAPI_LoadIcon(0, $IDI_INFORMATION)

    ; Image index = 0
    _GUIImageList_AddIcon($hImageList, $hIcon)

    ; Assign ImageList to GROUP HEADER slot
    _SendMessage($hListView, $LVM_SETIMAGELIST, $LVSIL_GROUPHEADER, $hImageList)

    ; Create group using iTitleImage
    Local $tagLVGROUP = _
            "uint cbSize;" & _
            "uint mask;" & _
            "ptr pszHeader;" & _
            "int cchHeader;" & _
            "ptr pszFooter;" & _
            "int cchFooter;" & _
            "int iGroupId;" & _
            "uint stateMask;" & _
            "uint state;" & _
            "uint uAlign;" & _
            "int iTitleImage"

    Local $sHeader = "Group A"

    Local $tText = DllStructCreate("wchar[" & StringLen($sHeader) + 1 & "]")
    DllStructSetData($tText, 1, $sHeader)

    Local $tGroup = DllStructCreate($tagLVGROUP)

    DllStructSetData($tGroup, "cbSize", DllStructGetSize($tGroup))

    ; Use HEADER + GROUPID + TITLEIMAGE
    DllStructSetData($tGroup, "mask", _
            BitOR($LVGF_HEADER, $LVGF_GROUPID, $LVGF_TITLEIMAGE))

    DllStructSetData($tGroup, "pszHeader", DllStructGetPtr($tText))
    DllStructSetData($tGroup, "cchHeader", StringLen($sHeader))

    DllStructSetData($tGroup, "iGroupId", 1)

    ; Use image index 0 from LVSIL_GROUPHEADER
    DllStructSetData($tGroup, "iTitleImage", 0)

    ; Insert group
    _SendMessage($hListView, $LVM_INSERTGROUP, -1, DllStructGetPtr($tGroup))

    ; Add item into group
    Local $iItem = _GUICtrlListView_AddItem($hListView, "Item 1")

    _GUICtrlListView_AddSubItem($hListView, $iItem, "123", 1)

    _GUICtrlListView_SetItemGroupID($hListView, $iItem, 1)

    GUISetState()

    While GUIGetMsg() <> $GUI_EVENT_CLOSE
    WEnd

EndFunc

But I has no positive effect.

 

Here I saw some positive results:
https://www.vbforums.com/showthread.php?804969-PARTIALLY-RESOLVED-Listview-Grouping-in-Virtual-Mode

I mean I looking for such result (image in Headers and image in Groups):
http://vbrichclient.com/Downloads/OwnerDrawnGroupList.png

Edited 3 hours ago by mLipok

[mLipok]

Another not working example

expandcollapse popup

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

_Example()

Func _Example()

    Local $hGUI = GUICreate("GroupHeaderImageList", 500, 300)
    #forceref $hGUI

    Local $idListView = GUICtrlCreateListView("Name|Value", 10, 10, 480, 250)
    Local $hListView = GUICtrlGetHandle($idListView)

    ; Enable group view
    _SendMessage($hListView, $LVM_ENABLEGROUPVIEW, True, 0)

    ; =====================================================
    ; Create ImageList
    ; =====================================================

    Local $hImageList = _GUIImageList_Create(16, 16)

    Local $hIcon = _WinAPI_LoadIcon(0, $IDI_INFORMATION)

    ; Add icon to ImageList
    _GUIImageList_AddIcon($hImageList, $hIcon)

    ; =====================================================
    ; Set Group Header ImageList
    ; =====================================================

    ListView_SetGroupHeaderImageList($hListView, $hImageList)

    ; =====================================================
    ; Get Group Header ImageList
    ; =====================================================

    Local $hReturned = ListView_GetGroupHeaderImageList($hListView)

    ConsoleWrite("Original : " & $hImageList & @CRLF)
    ConsoleWrite("Returned : " & "0x" & Hex($hReturned) & @CRLF)

    ; =====================================================
    ; Create group
    ; =====================================================

    Local $tagLVGROUP = _
            "uint cbSize;" & _
            "uint mask;" & _
            "ptr pszHeader;" & _
            "int cchHeader;" & _
            "ptr pszFooter;" & _
            "int cchFooter;" & _
            "int iGroupId;" & _
            "uint stateMask;" & _
            "uint state;" & _
            "uint uAlign;" & _
            "int iTitleImage"

    Local $sHeader = "Group A"

    Local $tText = DllStructCreate("wchar[" & StringLen($sHeader) + 1 & "]")
    DllStructSetData($tText, 1, $sHeader)

    Local $tGroup = DllStructCreate($tagLVGROUP)

    DllStructSetData($tGroup, "cbSize", DllStructGetSize($tGroup))

    DllStructSetData($tGroup, "mask", _
            BitOR($LVGF_HEADER, $LVGF_GROUPID, $LVGF_TITLEIMAGE))

    DllStructSetData($tGroup, "pszHeader", DllStructGetPtr($tText))
    DllStructSetData($tGroup, "cchHeader", StringLen($sHeader))

    DllStructSetData($tGroup, "iGroupId", 1)

    ; Use image index 0
    DllStructSetData($tGroup, "iTitleImage", 0)

    ; Insert group
    _SendMessage($hListView, $LVM_INSERTGROUP, -1, DllStructGetPtr($tGroup))

    ; =====================================================
    ; Add item into group
    ; =====================================================

    Local $iItem = _GUICtrlListView_AddItem($hListView, "Item 1")

    _GUICtrlListView_AddSubItem($hListView, $iItem, "123", 1)

    _GUICtrlListView_SetItemGroupID($hListView, $iItem, 1)

    GUISetState()

    While GUIGetMsg() <> $GUI_EVENT_CLOSE
    WEnd

EndFunc

; #FUNCTION# ===================================================================
; Name...........: ListView_SetGroupHeaderImageList
; Description ...: Sets the ImageList used by group headers.
; ==============================================================================
Func ListView_SetGroupHeaderImageList($hListView, $hImageList)

    Return _SendMessage( _
            $hListView, _
            $LVM_SETIMAGELIST, _
            $LVSIL_GROUPHEADER, _
            $hImageList)

EndFunc

; #FUNCTION# ===================================================================
; Name...........: ListView_GetGroupHeaderImageList
; Description ...: Gets the ImageList used by group headers.
; ==============================================================================
Func ListView_GetGroupHeaderImageList($hListView)

    Return _SendMessage( _
            $hListView, _
            $LVM_GETIMAGELIST, _
            $LVSIL_GROUPHEADER, _
            0)

EndFunc