如何通过按下按钮kivy/kivymd/python在另一个窗口中创建按钮

Question

我正试图通过按下按钮来创建一个按钮，但我找不到任何有关它的信息。

Answer 1

您可以在kivy或kivyMD中使用此方法。

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()

Answer 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()