treeview: trying to expand just one parent

[gcue]

Im able to expand the whole treeview but i want to just expand ONE parent..

ive tried using ($parent = the @ctrlid)

_GUICtrlTreeView_Expand($treeview, $parent, True)

[PsaltyDS]

Im able to expand the whole treeview but i want to just expand ONE parent..

ive tried using ($parent = the @ctrlid)

_GUICtrlTreeView_Expand($treeview, $parent, True)

There is nothing wrong with the code you posted, so the problem is elsewhere. This is the help file demo, simplified a little:

#include <GuiConstantsEx.au3>
#include <GuiTreeView.au3>
#include <WindowsConstants.au3>

Opt('MustDeclareVars', 1)

Global $hItem[5], $hTreeView
Global $iStyle = BitOR($TVS_EDITLABELS, $TVS_HASBUTTONS, $TVS_HASLINES, $TVS_LINESATROOT, $TVS_DISABLEDRAGDROP, $TVS_SHOWSELALWAYS, $TVS_CHECKBOXES)

GUICreate("TreeView Expand", 400, 300)
$hTreeView = GUICtrlCreateTreeView(2, 2, 396, 268, $iStyle, $WS_EX_CLIENTEDGE)
For $x = 0 To 4
    $hItem[$x] = GUICtrlCreateTreeViewItem(StringFormat("[%02d] New Item", $x), $hTreeView)
    For $y = 0 To 2
        GUICtrlCreateTreeViewItem(StringFormat("[%02d] New Item", $y), $hItem[$x])
    Next
Next
GUISetState()

MsgBox(4160, "Information", "Expand All")
_GUICtrlTreeView_Expand($hTreeView)

MsgBox(4160, "Information", "Collapse All")
_GUICtrlTreeView_Expand($hTreeView, 0, False)

MsgBox(4160, "Information", "Expand item 1")
_GUICtrlTreeView_Expand($hTreeView, $hItem[1])

MsgBox(4160, "Information", "Collapse item 1")
_GUICtrlTreeView_Expand($hTreeView, $hItem[1], False)

; Loop until user exits
Do
Until GUIGetMsg() = $GUI_EVENT_CLOSE

That works fine.

[gcue]

hmm perhaps it has to do with the way i destroy and rebuild it? it does the expanding collapsing just fine after that though

GUISwitch($MustHave_Edit_GUI)
    _GUICtrlTreeView_Destroy($treeview)
    
    BuildTree()
    
    _GUICtrlTreeView_Expand($treeview, 0, True)
    _GUICtrlTreeView_Expand($treeview, 0, False)
    
    _GUICtrlTreeView_Expand($treeview, $parent, True)

Edited February 24, 2009 by gcue

[gcue]

duh - of course.. recreating treeview was gonna generate new control ids

[MichaelHan]

How could I just Expand one level of the tree, without expanding the whole tree under the parent.

[Zedna]

How could I just Expand one level of the tree, without expanding the whole tree under the parent.

Look at sources

"C:\Program Files\AutoIt3\Include\guitreeview.au3" 

_GUICtrlTreeView_Expand()

_GUICtrlTreeView_ExpandItem()

[MichaelHan]

Look at sources

"C:\Program Files\AutoIt3\Include\guitreeview.au3"

_GUICtrlTreeView_Expand()

_GUICtrlTreeView_ExpandItem()

hi Zedna,

Instead of using _GUICtrlTreeView_Expand(), I find the Item through the tree first, then expand it in the end.

Thanks for your suggestion anyway.

I have another query about how to get Item highlighted in the treeview so that the relevant info can be displayed on the other side of the window.

Thanks

[Zedna]

Use GUIRegisterMsg() with WM_NOTIFY to catch TVN_SELCHANGED

Search helpfile/forum for examples...

Edited April 27, 2009 by Zedna

[Zedna]

I have another query about how to get Item highlighted in the treeview so that the relevant info can be displayed on the other side of the window.

Thanks

Also look at

_GUICtrlTreeView_GetSelection()

[MichaelHan]

Also look at

_GUICtrlTreeView_GetSelection()

Thanks Zedna.

I use _GUICtrlTreeView_ClickItem() instead and It works fine.

I'm stucked by the same item names in a treeview. I really wanna expand the second, but it will find the other one first. Any idea for this? They locates under the different child trees, but from the same root.

[matwachich]

Found the solution, while looking in the source of _GuiCtrlTreeView_ExpandItem:

; $hTreeView = Handle to your TreeView Control
; $hItem = Handle to your TreeView Item
_SendMessage($hTreeView, $TVM_EXPAND, $TVE_EXPAND, $hItem, 0, "wparam", "handle")
  _SendMessage($hTreeView, $TVM_ENSUREVISIBLE, 0, $hItem, 0, "wparam", "handle")