Filter display of "GuiCtrlCreateTreeView"

[jlf]

Hi,

    In a complete project, I have a TreeView with lots of CheckBox items whose properties are shared with an external C-dll through an struct array. In this TreeView,

    I need to filter the list in this TreeView, like to reduce display. My final goal is having a field where user may enter a string to display only checkboxes whoses text contains this string.

    I have done a minimal test-case, but was not able to "hide" some items. In this case, I try to hide items whoses checkboxe is unchecked. I found a previous thread about TreeView (at https://www.autoitscript.com/forum/topic/118585-solved-disabling-parent-treeview-checkboxes/ ), but all I can do it ho hide the square of the checkbox, not the full line.

    Executing the attached script : all checkboxes are unchecked at start-up. Click on "B only" to select "B*" boxes. Then "View Sel" => I would like to see only "B*", to only 4 items without destroying handle/others info on "A*" items.

    If someone has the solution, please be welcome

Best Regards,

 

    JLF

CtrlTreeView.au3

[orbs]

@jlf,

you cannot hide individual tree view items. you need to rebuild your tree view upon requirement.

if you are concerned about preserving handles to items, then good and bad news:

bad news: you can't preserve them.

good news: you don't need to. you are probably building your tree view to reflect a data structure. but the tree view is not only a reflection - it is also a data structure by itself. the difference between a tree view data structure and any other data structure is the unique ID. while a database record may have a UID which you correlate with the tree view item handle, the UID of a tree view item is the full text of itself prefixed with all parent branches, starting from the root.

so instead of reading the handle of a checked item to correlate with your data source, you can read the full text and correlate that.

another approach would be to ask how many levels does your tree view have. if it's a shallow tree (2-3 levels max) you can consider using list view instead, in with you can manage each item distinctively.

of course, you may be able to do that with a deeply-customized, owner-drawn tree view; however i'm not aware of the existence of anything of that sort.

[jlf]

Thanks, it's working

[orbs]

@jlf, care to share your solution? this is a forum, not a ticketing system; someone in the future may come across the same need, and will probably be quite frustrated if the topic ends with someone having a solution but not sharing it... 

[jlf]

The main idea is your : deleting the TreeView then create it (again). I provide a example of such implementation. Not fully tested but the main part is here...

CtrlTreeView.au3