Treeview child problem

[AdmiralAlkex]

Run the example for _GUICtrlTreeView_DeleteChildren(), and after the deletion the plus-sign will still be there in front of the parent.

I want the plus to disappear when there's no child (too confusing), any idea how to "fix" that?

[smashly]

Hi as a nasty work around you could delete the parent and insert the parent again going by the example

expandcollapse popup

#AutoIt3Wrapper_au3check_parameters=-d -w 1 -w 2 -w 3 -w 4 -w 5 -w 6
#include <GuiConstantsEx.au3>
#include <GuiTreeView.au3>
#include <GuiImageList.au3>
#include <WindowsConstants.au3>

Opt('MustDeclareVars', 1)

$Debug_TV = False ; Check ClassName being passed to functions, set to True and use a handle to another control to see it work

_Main()

Func _Main()

    Local $hItem, $hImage, $iImage, $hTreeView, $sText, $iImageIndex
    Local $iStyle = BitOR($TVS_EDITLABELS, $TVS_HASBUTTONS, $TVS_HASLINES, $TVS_LINESATROOT, $TVS_DISABLEDRAGDROP, $TVS_SHOWSELALWAYS, $TVS_CHECKBOXES)

    GUICreate("TreeView Delete All", 400, 300)

    $hTreeView = GUICtrlCreateTreeView(2, 2, 396, 268, $iStyle, $WS_EX_CLIENTEDGE)
    GUISetState()

    $hImage = _GUIImageList_Create(16, 16, 5, 3)
    _GUIImageList_AddIcon($hImage, "shell32.dll", 110)
    _GUIImageList_AddIcon($hImage, "shell32.dll", 131)
    _GUIImageList_AddIcon($hImage, "shell32.dll", 165)
    _GUIImageList_AddIcon($hImage, "shell32.dll", 168)
    _GUIImageList_AddIcon($hImage, "shell32.dll", 137)
    _GUIImageList_AddIcon($hImage, "shell32.dll", 146)
    _GUICtrlTreeView_SetNormalImageList($hTreeView, $hImage)

    _GUICtrlTreeView_BeginUpdate($hTreeView)
    For $x = 1 To 2
        $iImage = Random(0, 5, 1)
        $hItem = _GUICtrlTreeView_Add($hTreeView, 0, StringFormat("[%02d] New Item", $x), $iImage, $iImage)
        For $y = 1 To 3
            $iImage = Random(0, 5, 1)
            _GUICtrlTreeView_AddChild($hTreeView, $hItem, StringFormat("[%02d] New Child", $y), $iImage, $iImage)
        Next
    Next

    _GUICtrlTreeView_EndUpdate($hTreeView)

    _GUICtrlTreeView_Expand($hTreeView)

    MsgBox(4160, "Information", "Delete Children")

    $sText = _GUICtrlTreeView_GetText($hTreeView, $hItem)
    $iImageIndex = _GUICtrlTreeView_GetImageIndex($hTreeView, $hItem)
    _GUICtrlTreeView_Delete($hTreeView, $hItem)
    _GUICtrlTreeView_InsertItem($hTreeView, $sText, 0, -1,$iImageIndex)
    ;_GUICtrlTreeView_DeleteChildren($hTreeView, $hItem)


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

You'd need to adjust the Insert Item params to suit your insertion spot.

I know it defeats the idea of _GUICtrlTreeView_DeleteChildren().

I was looking for a SendMessage to delete a node button, but I'm not sure if or what it would be.

Edited September 20, 2010 by smashly