treeview

问题 I have one tree view in my windows form. I use the following function to select the node in that treeView. private void FindAndSelect(TreeNodeCollection collection, object toSelect) { //problem in this line becouse while converting the toSelect into IstructuredEntity is showing null. var entityToSelect = toSelect as Decoupling::IStructureEntity; if (entityToSelect == null) //just select the Structure root { _treeView.SelectedNode = _treeView.Nodes[0]; return; } foreach (TreeNode tn in

问题 I have one tree view in my windows form. I use the following function to select the node in that treeView. private void FindAndSelect(TreeNodeCollection collection, object toSelect) { //problem in this line becouse while converting the toSelect into IstructuredEntity is showing null. var entityToSelect = toSelect as Decoupling::IStructureEntity; if (entityToSelect == null) //just select the Structure root { _treeView.SelectedNode = _treeView.Nodes[0]; return; } foreach (TreeNode tn in

问题 I am trying to set colors to rows in a tkinter treeview object, using tags and tag_configure. There has been an earlier discussion on coloring rows which is rather old and seems to work no longer for Python3: ttk treeview: alternate row colors I have added a brief example. For me, all rows stay white, independent of whether I execute tag_configure prior or after the insert command. import tkinter as tk import tkinter.ttk as ttk root = tk.Tk() w = tk.Label(root, text="Hello, world!") w.pack()

问题 I am trying to set colors to rows in a tkinter treeview object, using tags and tag_configure. There has been an earlier discussion on coloring rows which is rather old and seems to work no longer for Python3: ttk treeview: alternate row colors I have added a brief example. For me, all rows stay white, independent of whether I execute tag_configure prior or after the insert command. import tkinter as tk import tkinter.ttk as ttk root = tk.Tk() w = tk.Label(root, text="Hello, world!") w.pack()

问题 I am struggling with styles in TKinter My main problem is that you cannot click anything in the treeview. To test, simply press the "Press To Test" Button For some reason it looks like, style.theme_create takes over my treeview widget, and no matter what I try, I cannot seem to find a solution around it. I tried activating the cursor, selection_set, focus_set, etc. If I comment the style I can click, but not with it on. I am still quite new to python and would appreciate some insight. I tried

问题 I am struggling with styles in TKinter My main problem is that you cannot click anything in the treeview. To test, simply press the "Press To Test" Button For some reason it looks like, style.theme_create takes over my treeview widget, and no matter what I try, I cannot seem to find a solution around it. I tried activating the cursor, selection_set, focus_set, etc. If I comment the style I can click, but not with it on. I am still quite new to python and would appreciate some insight. I tried

问题 What this code do: If parent node is checked/unchecked, also check/uncheck all child nodes. If just one child node is checked, also check parent node. Private Sub TreeView1_AfterCheck(sender As Object, e As TreeViewEventArgs) Handles TreeView1.AfterCheck If updatingTreeView Then Return updatingTreeView = True CheckNode(e.Node, e.Node.Checked) HasCheckedChildNode = 0 updatingTreeView = False End Sub Private Sub CheckNode(node As TreeNode, isChecked As Boolean) If node.Parent IsNot Nothing Then

问题 Problem Statement You are given a pointer to the root of a binary tree. Print the top view of the binary tree. You only have to complete the function. My Code: void top_view(Node root) { Node r = root; if(r.left!=null){ top_view(r.left); System.out.print(r.data + " "); } if(r.right!=null){ System.out.print(r.data + " "); top_view(r.right); } } The two if statements are executed every time the function is called, but I need only one of them to execute. I tried switch but its giving constant

问题 Problem Statement You are given a pointer to the root of a binary tree. Print the top view of the binary tree. You only have to complete the function. My Code: void top_view(Node root) { Node r = root; if(r.left!=null){ top_view(r.left); System.out.print(r.data + " "); } if(r.right!=null){ System.out.print(r.data + " "); top_view(r.right); } } The two if statements are executed every time the function is called, but I need only one of them to execute. I tried switch but its giving constant

问题 With a TreeView I have a Patient structure: private ObservableCollection<MTreeViewPaz> _Patients; public ObservableCollection<MTreeViewPaz> Patients { get { return _Patients; } private set { Set(ref _Patients, value); } } and a treeView bound to it: <winui:TreeView x:Name="treeView" Grid.Row="1" Expanding="treeView_Expanding" ItemInvoked="OnItemInvoked" ItemTemplate="{StaticResource ItemTemplate}" ItemsSource="{x:Bind Patients, Mode=OneWay}" SelectionMode="Single" /> with Item Template: