CTkTextbox

The CTkTextbox class creates a textbox, which is scrollable in vertical and horizontal direction (with wrap='none'). The insert, get and delete methods are based on indices, which are explained here: https://anzeljg.github.io/rin2/book2/2405/docs/tkinter/text-index.html

Example Code:

textbox = customtkinter.CTkTextbox(app)
textbox.grid(row=0, column=0)

textbox.insert("0.0", "new text to insert")  # insert at line 0 character 0
text = textbox.get("0.0", "end")  # get text from line 0 character 0 till the end
textbox.delete("0.0", "end")  # delete all text
textbox.configure(state="disabled")  # configure textbox to be read-only

Example program where the textbox completely fills the window:

import customtkinter


class App(customtkinter.CTk):
    def __init__(self):
        super().__init__()
        self.grid_rowconfigure(0, weight=1)  # configure grid system
        self.grid_columnconfigure(0, weight=1)

        self.textbox = customtkinter.CTkTextbox(master=self, width=400, corner_radius=0)
        self.textbox.grid(row=0, column=0, sticky="nsew")
        self.textbox.insert("0.0", "Some example text!\n" * 50)


app = App()
app.mainloop()

which results in:

Arguments:

argument	value
master	root, frame, top-level
width	box width in px
height	box height in px
corner_radius	corner radius in px
border_width	border width in px
border_spacing	minimum space between text and widget border, default is 3. Set to 0 for the text to touch the widget border (if corner_radius=0)
fg_color	main widget color, tuple: (light_color, dark_color) or single color or "transparent"
border_color	border color, tuple: (light_color, dark_color) or single color
text_color	text color, tuple: (light_color, dark_color) or single color
scrollbar_button_color	main color of scrollbar, tuple: (light_color, dark_color) or single color
scrollbar_button_hover_color	hover color of scrollbar, tuple: (light_color, dark_color) or single color
font	text font, tuple: (font_name, size)
activate_scrollbars	default is True, set to False to prevent scrollbars from appearing
state	"normal" (standard) or "disabled" (not clickable, read-only)
wrap	how to wrap text at end of line, default is 'char', other options are 'word' or 'none' for no wrapping at all and horizontal scrolling

and the following arguments of the tkinter.Text class:

"autoseparators", "cursor", "exportselection", "insertborderwidth", "insertofftime", "insertontime", "insertwidth", "maxundo", "padx", "pady", "selectborderwidth", "spacing1", "spacing2", "spacing3", "state", "tabs", "takefocus", "undo", "xscrollcommand", "yscrollcommand"

Methods:

• .configure(attribute=value, ...)

  All attributes can be configured and updated.

  textbox.configure(state=..., text_color=..., ...)

• .cget(attribute_name)

  Get values of all attributes specified as string.

• .bind(sequence=None, command=None, add=None)

  Bind commands to events specified by sequence string.

• .unbind(sequence, funcid=None)

  Unbind command from sequence specified by funcid, which is returned by .bind().

• .insert(index, text, tags=None)

  Insert text at given index. Index for the tkinter.Text class is specified by 'line.character', 'end', 'insert' or other keywords described here: https://anzeljg.github.io/rin2/book2/2405/docs/tkinter/text-index.html

• .delete(self, index1, index2=None)

  Delete the characters between index1 and index2 (not included).

• .get(index1, index2=None)

  Return the text from INDEX1 to INDEX2 (not included).

• .focus_set()

  Set focus to the text widget.

and nearly all other methods of tkinter.Text described here: https://anzeljg.github.io/rin2/book2/2405/docs/tkinter/text-methods.html