如何通过按下按钮 kivy/kivymd/python 在另一个窗口中创建按钮

Posted 2023-04-14

【中文标题】如何通过按下按钮 kivy/kivymd/python 在另一个窗口中创建按钮

【英文标题】：How do i create a button in another window by pressing a button kivy/kivymd/python

【发布时间】：2021-06-10 11:41:20

【问题描述】：

我正在尝试通过按下按钮来创建按钮，但我找不到任何有关它的信息。

【参考方案1】：

您可以在 kivy 或 kivyMD 中使用这种方法。

from kivy.lang import Builder
from kivymd.app import MDApp
from kivymd.uix.button import MDRaisedButton
from kivy.properties import ObjectProperty


KV = '''

ScreenManager:
    id: screen_manager
    
    Screen:
        id: screenID
        
        MDRaisedButton:
            text: "Create Button"
            pos_hint: 'center_x': .5, 'center_y': .5
            on_release: app.createButton()
'''

class Example(MDApp):
    screen_manager = ObjectProperty() # IMPORTANT!

    def __init__(self, **kwargs):
        super().__init__(**kwargs)
        self.screen = Builder.load_string(KV)

    def build(self):
        return self.screen

    def createButton(self):
        print("button created")
        self.btn = MDRaisedButton(text= "New Button", pos_hint= 'center_x': .5, 'center_y': .7)
        self.root.ids.screenID.add_widget(self.btn)


Example().run()

【参考方案2】：

试试这个

from tkinter import *
import tkinter as tk

class MainWindow(tk.Frame):
    counter = 0
    def __init__(self, *args, **kwargs):
        tk.Frame.__init__(self, *args, **kwargs)
        self.button = tk.Button(self, text="Create new hotlink",
                            command=self.create_window)
        self.button.pack(side="top")

    def create_window(self):
        self.counter += 1
        t = tk.Toplevel(self)
        t.wm_title("All the best to hackathon")
        fields = 'Hotlink Name', 'URL'

        def fetch(entries):
            for entry in entries:
                field = entry[0]
                text = entry[1].get()
                print('%s: "%s"' % (field, text))

        def makeform(root, fields):
            entries = []
            for field in fields:
                row = Frame(root)
                lab = Label(row, width=15, text=field, anchor='w')
                ent = Entry(row)
                row.pack(side=TOP, fill=X, padx=5, pady=5)
                lab.pack(side=LEFT)
                ent.pack(side=RIGHT, expand=YES, fill=X)
                entries.append((field, ent))
            return entries

        def button2():
            newButton = tk.Button(root, text=fields[0])
            newButton.pack(side=RIGHT)

            ents = makeform(t, fields)
            t.bind('<Return>', (lambda event, e=ents: fetch(e)))
            b2 = Button(t, text='Save', command=button2)
            b2.pack(side=LEFT, padx=5, pady=5)

if __name__ == "__main__":
    root = tk.Tk()
    main = MainWindow(root)
    main.pack(side="top", fill="both", expand=True)
    root.mainloop()