{"id":3647,"date":"2019-09-18T19:12:03","date_gmt":"2019-09-18T17:12:03","guid":{"rendered":"https:\/\/pythonprogramming.altervista.org\/?p=3647"},"modified":"2019-09-21T19:23:26","modified_gmt":"2019-09-21T17:23:26","slug":"create-a-new-tkinter-widget-inputbox","status":"publish","type":"post","link":"https:\/\/pythonprogramming.altervista.org\/create-a-new-tkinter-widget-inputbox\/","title":{"rendered":"Create a new tkinter widget: Inputbox"},"content":{"rendered":"

Tkinter should have a widget to get an input from a popup window? Why we cannot create our own widget for that?<\/p>\n

import tkinter as tk \r\n\r\nclass Inputbox():\r\n    def __init__(self, text=\"\"):\r\n        self.root = tk.Tk()\r\n        self.get = \"\"\r\n        self.root.geometry(\"300x100\")\r\n        self.root.title(\"Inputbox\")\r\n        self.label_file_name = tk.Label(self.root, text=text)\r\n        self.label_file_name.pack()\r\n        self.entry = tk.Entry(self.root)\r\n        self.entry.pack()\r\n        self.entry.focus()\r\n        self.entry.bind(\"<Return>\", lambda x: self.getinput(self.entry.get()))\r\n        self.root.mainloop()\r\n\r\n    def getinput(self, value):\r\n        self.get = value\r\n        self.root.destroy()\r\n\r\n\r\ninp = Inputbox(text=\"What is your favourite site?\")\r\nprint(inp.get)<\/pre>\n
This is the output:<\/p>\n
\"\"<\/a><\/p>\n
This will return the string “pythonprogramming”<\/p>\n
Using ttk for a prettier inputbox<\/h2>\n
I want to give you an example about how complicated can be ttk sometimes. It has a more modern style, but to change the color and the background can be very difficult. Take a look at this code to see what I mean:<\/p>\n
import tkinter as tk\r\nimport tkinter.ttk as ttk\r\nclass Inputbox:\r\n\tdef __init__(self, text=\"\"):\r\n\t\t\"\"\"An inputbox made by you\r\n\t\texample:\r\n\t\tinp = Inputbox(text=\"What is you favourite site?\")\r\n\t\tprint(inp.get)\r\n\t\t\"\"\"\r\n\t\tself.root = tk.Tk()\r\n\t\tself.get = \"\"\r\n\t\tself.root.title(\"Inputbox\")\r\n\t\tself.root[\"bg\"] = \"cyan\"\r\n\t\tstyle = ttk.Style()\r\n\t\tstyle2 = ttk.Style()\r\n\t\tstyle.configure(\"BW.TLabel\", foreground=\"red\", background=\"yellow\")\r\n#\t\tstyle2.configure(\"EntryStyle.TEntry\",\r\n#\t\t\t\t\t\t\tforeground=\"blue\",\r\n#\t\t\t\t\t\t\tbackground=[(\"active\",\"red\")],\r\n#\t\t\t\t\t\t\tfieldbackground=\"red\")\r\n\r\n\t\testyle = ttk.Style()\r\n\t\testyle.element_create(\"plain.field\", \"from\", \"clam\")\r\n\t\testyle.layout(\"EntryStyle.TEntry\",\r\n\t                   [('Entry.plain.field',\r\n\t                   \t{'children':\r\n\t                   \t\t\t[('Entry.background', {'children':\r\n\t                   \t\t\t\t[('Entry.padding', {'children':\r\n\t                   \t\t\t\t\t[('Entry.textarea', {'sticky': 'nswe'})],\r\n\t                      \t\t'sticky': 'nswe'})],\r\n\t                      \t\t'sticky': 'nswe'})],\r\n\t                      'border':'2',\r\n\t                      'sticky': 'nswe'})])\r\n\t\testyle.configure(\"EntryStyle.TEntry\",\r\n\t                 background=\"green\", \r\n\t                 foreground=\"blue\",\r\n\t                 fieldbackground=\"gold\")\r\n\t\tself.label = ttk.Label(self.root, text = text, font=\"Arial 20\", style=\"BW.TLabel\")\r\n\r\n\t\tself.label.pack(fill=tk.BOTH, expand=1)\r\n\r\n\t\tself.entry = ttk.Entry(self.root, font=\"Arial 20\", style=\"EntryStyle.TEntry\")\r\n\r\n\t\tself.entry.pack(fill=tk.BOTH, padx=10, pady=10)\r\n\t\tself.entry.focus()\r\n\t\tself.entry.bind(\"<Return>\", lambda x: self.getinput())\r\n\t\tself.root.mainloop()\r\n\r\n\tdef getinput(self):\r\n\t\tself.get = self.entry.get()\r\n\t\tself.root.destroy()\r\n\r\n\r\ninp = Inputbox(text=\"What is you favourite site?\")\r\nprint(inp.get)<\/pre>\n
\"\"<\/a><\/p>\n\t\r\n