![]() It is an old bug from 2014 anf not fixed, and now it fixed. Print(datetime.now().strftime("%H:%M:%S"), "Treeview selection changed !") In python(3.8.10)/tkinter(8.6.9), it won't generate ">" event if we delete selected item of ttk.Treeview, but it will for python(3.9.9/3.10.1)/tkinter(8.6.12).Ĭheck it just by clicking 'Delete Item 1' button in following demo code I think Im less than a half dozen lines of code to achieve a few seconds or several seconds to populate but have spent about 4 hours, maybe longer looking at this without success.Delete selected item generate "" event or not in different version of tkinter or PythonĬreated on 10:02 by Jason990420, last changed 14:59 by admin. Tried putting the beginupdate and endupdate within the loop above, it makes no difference. _(ds.Tables(0).Rows(Z).Item("HierarchyName " ).ToString).Tag = ds.Tables(0).Rows(Z).Item("Product_Category_HierarchyID " ).ToString Using da As New SQLite.SQLiteDataAdapter(SQLStr, SQLDB) SQLStr = SQLStr & " ORDER BY HierarchyName " SQLStr = SQLStr & " WHERE Product_Category_Hierarchy_ParentID= " & _child.Tag SQLStr = SQLStr & " FROM Product_Category_Hierarchy " ![]() SQLStr = SQLStr & " Product_Category_HierarchyID" Private Function FindNode(ByVal _nodeCollection As TreeNodeCollection) As TreeNodeįor Each _child As TreeNode In _nodeCollection So if anyone has any ideas of being able to reduce the 50 minutes or so to populate this down to a few seconds I would be in your debt :) I have approx 130,000 items and again, yes, I need to pre-populate rather than on-the-fly, the reason being I use this function to populate a checkbox type treeview which needs to be able to save what has been selected - and I want to keep things nice and tidy by utilising the same base-populating code. This looks something like the below: from tkinter import. The first is the use of Style () as you pointed out, which will let us set the style of the Treeview.Heading text if we want to change that. The sub that calls this function, first calls a Setup sub that populates the root nodes, sets beginupdate, calls the FindNode function below then when it eventually returns, calls endupdate on the treeview. There are two solutions which jump to mind. ![]() So here is my function (its the recursive part). I know the answer will probably be just that - Dictionaries or an List Of but I cannot get it to function correctly. I am trying to return the parent of a tkinter treeview selection upon a selection event, so if the selection changes to 'child' I would like it to print 'parent', working example below, currently it prints the selection, not the parent of the selection: try: import tkinter as tk. I have looked at the FastTreeView code elsewhere on CodeProject which utilises Dictionaries/Arrays to be populated then populate the treeview - the example the chap provides is lightning fast but I cannot get it to work with what I am trying to achieve. The SQL Queries and database format are irrelevant in the overall performance (there is a small bottleneck but its livable) - its the population of the Treeview itself. Once I start getting several thousand entries to populate, it starts taking a long time to populate, even with a beginupdate and endupdate on the treeview. I have a Product-Hierarchy which pre-populates a treeview (I cannot use population on the fly due to some other features of the application - so I have to go the pre-populate route).
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