Wpf treeview style examples4/8/2024 elif col='yellow': nfigure('Treeview',background="yellow", fieldbackground="yellow", foreground="black", font=font1)Ĭonfiguring Tkinter Treeview style background foreground color using Radio buttonsįull code is here from tkinter import ttkimport tkinter as tk# Creating tkinter my_wmy_w = tk.Tk()my_w.geometry("300x250") # width and height of the window my_w.title("trv=ttk.Treeview(my_w,selectmode='browse',show='headings',height=5)trv.grid(row=1,column=1,columnspan=3,padx=30,pady=10)# column identifiers trv = ("1", "2")# Defining headings, other option is treetrv = 'headings tree' # width of columns and alignment trv.column("#0", width = 80, anchor ='c')trv.column("1", width = 10, anchor ='c')trv.column("2", width = 100, anchor ='c')# Headings # respective columnstrv.heading("#0", text ="Label",anchor='c')trv.heading("1", text ="id")trv.heading("2", text ="Name",anchor='c')trv.insert("",'end',iid=1,text='First',values=(1,'n1-Alex'))trv.insert("",'end',iid=2,text='second',values=(2,'n2-Ravi'))trv.insert("",'end',iid=3,text='third',values=(3,'n3-Ronn'))style = ttk.Style(my_w) style.theme_use("clam") # set theam to nfigure("Treeview", background="black", fieldbackground="black", foreground="white")nfigure('Treeview.Heading', background="PowderBlue")r1_v = tk.StringVar(value='black') # We used string variable heredef my_upd(col): if col='white': nfigure('Treeview',background="white", fieldbackground="white", foreground="black") elif col='yellow': nfigure('Treeview',background="yellow", fieldbackground="yellow", foreground="black") else: nfigure('Treeview',background="black", fieldbackground="black", foreground="white")r1 = tk.Radiobutton(my_w, text='Black', variable=r1_v, value='black', command=lambda:my_upd('black'))r1.grid(row=2,column=1) r2 = tk.Radiobutton(my_w, text='White', variable=r1_v, value='white', command=lambda:my_upd('white'))r2.grid(row=2,column=2) r3 = tk.Radiobutton(my_w, text='Yellow', variable=r1_v, value='yellow', command=lambda:my_upd('yellow'))r3.grid(row=2,column=3) my_w. font1=To one of the option we can assign the font style like this. def my_upd(col): if col='white': nfigure('Treeview',background="white", fieldbackground="white", foreground="black") elif col='yellow': nfigure('Treeview',background="yellow", fieldbackground="yellow", foreground="black") else: nfigure('Treeview',background="black", fieldbackground="black", foreground="white")We can include the font style also. r1 = tk.Radiobutton(my_w, text='Black', variable=r1_v, value='black', command=lambda:my_upd('black'))Inside the function my_upd() we will check the parameter value and accordingly update the style. On click of the radio button we will trigger the function my_upd(col) and we passed colour as parameter. We used on StringVar() with default value as 'black'. For example you could put the style in Grid.Resources or in Window.Resources instead of having it in the TreeView.ItemContainerStyle as you do now. nfigure('Treeview', rowheight=100) Managing style using Radio buttonsUsing three RadioButtons we will configure the style of Treeview. If you put the style further up the visual tree it would affect the items and subitems in the treeview. style = ttk.Style(my_w) style.theme_use("clam") # set theam to nfigure("Treeview", background="black", fieldbackground="black", foreground="white")nfigure('Treeview.Heading', background="PowderBlue")The last line in above code adds different background color to headings. / Interaction logic for MainWindow.Assigning default style for TreeviewThis is applied to all Treeview widgets. Instead, we use the HierarchicalDataTemplate, which allows us to template both the tree node itself, while controlling which property to use as a source for child items of the node.” As WPF Tutorial says in their website post TreeView, data binding and multiple templates “The WPF TreeView supports data binding, as pretty much all other WPF controls do, but because the TreeView is hierarchical in nature, a normal DataTemplate often won’t suffice.
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