TreeView confusion

[LondonNDIB]

Gui still confuses me

With treeview... say I have something like this:

+ Category 1

|_ Item 1

|_ Item 2

|_ Item 3

I know when the user presses the + it folds/expands the Category 1. Is there some way that the + can be a control with its own event?

Basically, I have hundreds of "Category"s each with some unknown number of "Item"s and it takes too long to generate the entire treeview with them all. What I want to achieve is that WHEN the user presses +, it runs a function that determines what should be in there.

At first glance, this doesn't seem possible because the + doesn't even exist unless the "Category" has at least one "item" in it. I suppose I can get around that with a dummy item that gets deleted after the + is pressed... hmm.

But I don't even know how I would go about calling the function with the + press.

Any ideas?

Thanks!

LD

[tonedeaf]

This is an interesting problem. I would also like to see how it can be done.

[ReFran]

Here an example from ..... (Valuater if I remember right)

Execute it and it will show you every item you have clicked (also Parents).

HTH, Reinhard

#include <GUIConstants.au3>
Dim $curlevel = 1
Dim $aTree = StringSplit(FileRead("Tree.dat", FileGetSize("Tree.dat")), @LF)

GUICreate("title")
$hTree = GUICtrlCreateTreeView(5, 5, 300, 200)

Dim $ahDepth[100]
$ahDepth[0] = $hTree

For $i = 1 to $aTree[0]
    $line = StringStripCR($aTree[$i])
    $markpos = StringInStr($line, "#")
    If $markpos <> $curlevel Then $curlevel = $markpos
    $ahDepth[$markpos] = GUICtrlCreateTreeViewItem(StringMid($line, $markpos+1), $ahDepth[$markpos-1])
Next

GUISetState()

While 1
    $nMsg = GUIGetMsg()
    if $nMsg > $ahDepth[$markpos] - Ubound($aTree) + 1 then 
       msgBox(0,"",$aTree[$nMsg-($ahDepth[$markpos] - Ubound($aTree)+1)])
    EndIf 
        
    If $nMsg = -3 Then Exit
Wend

Here the Tree.dat file for the TV example, which must be in the script dir.

#Level 1.1
 #Level 2.1
 #Level 2.2
 #Level 2.3
  #Level 3.1
   #Level 4.1
  #Level 3.2
 #Level 2.4
  #Level 3.3
#Level 1.2
 #Level 2.5
 #Level 2.6

Edited December 15, 2005 by ReFran