我可以制作一个这样的 tkinter 按钮：
button1 = ttk.Button(root, text = "Button 1", command=lambda: button_click(button1))
或者像这样循环：
tk.Button(root, text=f"Button {i}", command=lambda x=i: button_click(x)).pack()
但是第二个按钮没有像 button1 那样的变量名。因此，我无法通过名称访问它：
def button_click(button):
button_text = button.cget('text')
ttk.Label(root, text = button_text).pack()
或者在这样的循环中创建时，第二个按钮实际上是否具有 tkinter 默认名称？
我希望在使用 tkinter 中的条目进行过滤时，我的 Treeview 能够显示条纹行标记。代码在过滤之前运行良好，过滤函数也运行良好，但它不显示条纹行标记。有人可以帮忙解决它。我认为根据对 Python 和 tkinter 的了解程度，那里一定有无用的代码。代码如下：
问题在于 def execute_search(event) 函数：
#import modules
from tkinter import *
from tkinter import ttk
#Load data
Data = [
["John", "Elder", 1, "3223 NE 36Th", "Fort Lauderdale", "Florida", "33308"],
["Johny", "Elder", 2, "3223 NE 36Th", "Fort Lauderdale", "Florida", "33308"],
["Joe", "Elder", 3, "3223 NE 36Th", "Fort Lauderdale", "Florida", "33308"],
["marty", "Elder", 4, "3223 NE 36Th", "Fort Lauderdale", "Florida", "33308"],
["don", "Elder", 5, "3223 NE 36Th", "Fort Lauderdale", "Florida", "33308"],
["mike", "Elder", 6, "3223 NE 36Th", "Fort Lauderdale", "Florida", "33308"],
["Paula", "Elder", 7, "3223 NE 36Th", "Fort Lauderdale", "Florida", "33308"],
["Vianney", "Elder", 8, "3223 NE 36Th", "Fort Lauderdale", "Florida", "33308"],
["Mariana", "Elder", 9, "3223 NE 36Th", "Fort Lauderdale", "Florida", "33308"],
["Ignacio", "Elder", 10, "3223 NE 36Th", "Fort Lauderdale", "Florida", "33308"],
["Paul", "Elder", 11, "3223 NE 36Th", "Fort Lauderdale", "Florida", "33308"],
["Pablo", "Elder", 12, "3223 NE 36Th", "Fort Lauderdale", "Florida", "33308"],
["Pedro", "Elder", 13, "3223 NE 36Th", "Fort Lauderdale", "Florida", "33308"],
["Pascal", "Elder", 14, "3223 NE 36Th", "Fort Lauderdale", "Florida", "33308"],
["Peter", "Elder", 15, "3223 NE 36Th", "Fort Lauderdale", "Florida", "33308"],
]
#create a window
root = Tk()
root.title('Users List')
#root.iconbitmap()
root.geometry("1000x500")
#Add some style
style = ttk.Style()
#Pick a Theme
style.theme_use('default')
#Configure the Treeview color
style.configure("Treeview",
bakground="#D3D3D3",
FOREGROUND="black",
rowheight=25,
fieldbackground="#D3D3D3")
#Change selected color
style.map('Treeview',
bakground=[('selected', "#D347083")])
#Create the Treeview Frame
tree_frame = Frame(root)
tree_frame.pack(pady=10)
#Create the Treeview Scrollbar
tree_scroll = Scrollbar(tree_frame)
tree_scroll.pack(side=RIGHT, fill=Y)
#Create the Treeview
my_tree = ttk.Treeview(tree_frame, yscrollcommand=tree_scroll.set, selectmode="extended")
my_tree.pack()
#Configure Scrollbar
tree_scroll.config(command=my_tree.yview)
#Defining Columns
my_tree['columns'] = ("First Name", "Last Name", "ID", "Address", "City", "State", "Zipcode")
#Formating our columns
my_tree.column("#0", width=0, stretch=NO)
my_tree.column("First Name", anchor=W, width=140)
my_tree.column("Last Name", anchor=W, width=140)
my_tree.column("ID", anchor=CENTER, width=100)
my_tree.column("Address", anchor=CENTER, width=140)
my_tree.column("City", anchor=CENTER, width=140)
my_tree.column("State", anchor=CENTER, width=140)
my_tree.column("Zipcode", anchor=CENTER, width=140)
#Creating headings
my_tree.heading("#0", text="", anchor=W)
my_tree.heading("First Name", text="First Name", anchor=W)
my_tree.heading("Last Name", text="Last Name", anchor=W)
my_tree.heading("ID", text="ID", anchor=CENTER)
my_tree.heading("Address", text="Address", anchor=CENTER)
my_tree.heading("City", text="City", anchor=CENTER)
my_tree.heading("State", text="State", anchor=CENTER)
my_tree.heading("Zipcode", text="Zipcode", anchor=CENTER)
#Add our data to the screen
global count
count = 0
for record in Data:
if count % 2 == 0:
my_tree.insert(parent='', index='end', iid=count, text='', values=(record[0],
record[1], record[2], record[3], record[4], record[5], record[6]), tags=
('evenrow',))
else:
my_tree.insert(parent='', index='end', iid=count, text='', values=(record[0],
record[1], record[2], record[3], record[4], record[5], record[6]), tags=
('oddrow',))
#increment counter
count +=1
#print(record)
#create a frame
data_frame = LabelFrame(root, text="Record")
data_frame.pack(fill="x", expand="yes", padx=20)
#create the entry
fn_label = Label(data_frame, text="First Name")
fn_label.grid(row=0, column=0, padx=10)
fn_entry = Entry(data_frame)
fn_entry.grid(row=0, column=1, padx=10)
#function to filter data
def execute_search(event):
global count
count = 0
query = fn_entry.get().lower()
print(query)
for item in my_tree.get_children():
my_tree.delete(item)
data_list = []
for item in Data:
if query in item[0].lower():
my_tree.insert("", "end", values=item)
for item in Data:
data_list.append(item)
#Create straped row tags
my_tree.tag_configure('oddrow', background="white")
my_tree.tag_configure('evenrow', background="lightblue")
#Not in use
def query_database():
global count
count = 0
for record in Data:
if count % 2 == 0:
my_tree.insert(parent='', index='end', iid=count, text='', values=
(record[0], record[1], record[2], record[3], record[4], record[5],
record[6]), tags=('evenrow',))
else:
my_tree.insert(parent='', index='end', iid=count, text='', values=
(record[0],
record[1], record[2], record[3], record[4], record[5], record[6]),
tags=('oddrow',))
#increment counter
count +=1
#print(record)
fn_entry.bind('<KeyRelease>', execute_search)
root.mainloop()
我正在编写一个拖放应用程序，其中我将数据从树视图拖到输入小部件。我希望能够在按下鼠标按钮时使用光标下方的树中的项目。
我知道如何获取所选项目，但在事件发生时该项目并未返回
有没有什么办法可以退货？
import tkinter as tk
from tkinter import ttk
def main() -> None:
root = tk.Tk()
root.title('Tree coords')
tree = ttk.Treeview(root, height=30, show='headings',)
tree.grid(row=0, column=0, sticky=tk.NSEW)
tree.bind("<ButtonPress-1>", on_start)
col_list = ('Names', 'Names', 30)
tree['columns'] = col_list
for name in ['ab', 'ef', 'mn']:
values = (name)
tree.insert('', 'end', values=values)
root.mainloop()
def on_start(event=None):
widget = event.widget
selected_items = widget.selection()
x, y = event.widget.winfo_pointerxy()
print(x, y, selected_items)
if __name__ == '__main__':
main()
我读到，你可以在 .pack() 布局管理器中将滚动条放在左侧，但我找不到 .grid() 布局管理器的有效解决方案。我的书中的描述说我应该使用它sticky = 'nsw'来定位。然后我尝试将其移到左侧，请参阅我的示例。
这没有任何效果：
import tkinter as tk
from tkinter import ttk
from pathlib import Path
root = tk.Tk()
root.grid_rowconfigure(0, weight=1)
root.grid_columnconfigure(0, weight=1)
paths = Path('.').glob('**/*')
tv = ttk.Treeview(root, columns=['size','modified'], selectmode=None)
tv.heading('#0', text='Name')
tv.heading('size', text='Size', anchor='center')
tv.heading('modified', text='Modifies', anchor='center')
tv.column('#0', stretch = True, anchor='w')
tv.column('size', width=100, anchor='center')
tv.column('modified',anchor='center')
tv.grid_rowconfigure(0, weight=1)
tv.grid_columnconfigure(0, weight=1)
tv.grid(row=0, column=0, sticky='nsew')
#tv.pack(expand=True, fill='both')
for path in paths:
meta = path.stat()
parent = str(path.parent)
if parent == '.':
parent = ''
tv.insert(parent, 'end', iid=str(path), text=str(path.name), values=[meta.st_size, meta.st_mtime])
scrollbar = ttk.Scrollbar(root, orient=tk.VERTICAL, command=tv.yview)
tv.configure(yscrollcommand=scrollbar.set)
scrollbar.grid(row=0, column=1, sticky='nse') #scrollbar goes not to the left!
root.mainloop()
在树形视图中是否无法将滚动条定位到窗口的左侧？
我想创建一个“提交”按钮并将其放置在应用程序的中心。请查看代码和图片
import tkinter as tk # stick to one logic using tk or Tkinter!
from tkinter import ttk
class GUI(tk.Tk):
def __init__(self):
super().__init__() # this basically replaces window as self
self.title("Example")
self.minsize(width=600, height=400) # do not allow resizing smaller than your initial canvas size
max_height = 1000 # use this to determine length of scroll heigth and if desired max window heigth
#self.maxsize(width=650, height=max_height) # → specify if needed
main_frame = tk.Frame(self) # name it more descriptive
main_frame.pack(expand=True, fill="both") # let the canvas parent frame stretch out when resizing
# let the canvas expand to fill main_frame both in width and height
main_frame.rowconfigure(0, weight=1)
main_frame.columnconfigure(0, weight=1)
# scrollregion is also essential when using scrollbars → but you only need y in your case!
self.canvas = tk.Canvas(main_frame, scrollregion=f"0 0 0 {max_height}", width=600, height=400)
self.canvas.grid(row=0, column=0, sticky=tk.NSEW)
self.scroll = tk.Scrollbar(main_frame, orient=tk.VERTICAL, command=self.canvas.yview, cursor="arrow")
self.scroll.grid(row=0, column=1, sticky=tk.NS)
self.canvas.config(yscrollcommand=self.scroll.set)
###############################
# Saving User Info
user_info_frame = tk.LabelFrame(main_frame, text="User Information") # unnecessary to manage with .grid
first_name_label = tk.Label(user_info_frame, text="First Name")
first_name_label.grid(row=0, column=0)
last_name_label = tk.Label(user_info_frame, text="Last Name")
last_name_label.grid(row=0, column=1)
first_name_entry = tk.Entry(user_info_frame)
last_name_entry = tk.Entry(user_info_frame)
first_name_entry.grid(row=1, column=0)
last_name_entry.grid(row=1, column=1)
title_label = tk.Label(user_info_frame, text="Title")
title_combobox = ttk.Combobox(user_info_frame, values=["", "Mr.", "Ms.", "Dr."])
title_label.grid(row=0, column=2)
title_combobox.grid(row=1, column=2)
age_label = tk.Label(user_info_frame, text="Age")
age_spinbox = tk.Spinbox(user_info_frame, from_=18, to=110)
age_label.grid(row=2, column=0)
age_spinbox.grid(row=3, column=0)
nationality_label = tk.Label(user_info_frame, text="Nationality")
nationality_combobox = ttk.Combobox(user_info_frame,
values=["Africa", "Antarctica", "Asia", "Europe", "North America",
"Oceania",
"South America"])
nationality_label.grid(row=2, column=1)
nationality_combobox.grid(row=3, column=1)
for widget in user_info_frame.winfo_children():
widget.grid_configure(padx=10, pady=5, sticky="nsew") # add sticky to stretch widget to fill grid cell
# Saving Course Info
courses_frame = tk.LabelFrame(main_frame) # unnecessary to manage with .grid
registered_label = tk.Label(courses_frame, text="Registration Status")
reg_status_var = tk.StringVar(value="Not Registered")
registered_check = tk.Checkbutton(courses_frame, text="Currently Registered",
variable=reg_status_var, onvalue="Registered", offvalue="Not registered")
registered_label.grid(row=0, column=0)
registered_check.grid(row=1, column=0)
numcourses_label = tk.Label(courses_frame, text="# Completed Courses")
numcourses_spinbox = tk.Spinbox(courses_frame, from_=0, to='infinity')
numcourses_label.grid(row=0, column=1)
numcourses_spinbox.grid(row=1, column=1)
numsemesters_label = tk.Label(courses_frame, text="# Semesters")
numsemesters_spinbox = tk.Spinbox(courses_frame, from_=0, to="infinity")
numsemesters_label.grid(row=0, column=2)
numsemesters_spinbox.grid(row=1, column=2)
for widget in courses_frame.winfo_children():
widget.grid_configure(padx=10, pady=5, sticky="nsew")
# rowconfigure seems to make no sense except you want to stretch in height as well (but why then a scrollbar?)
# but giving all cols the same weight will let them stretch evenly
user_info_frame.columnconfigure(0, weight=1)
user_info_frame.columnconfigure(1, weight=1)
user_info_frame.columnconfigure(2, weight=1)
courses_frame.columnconfigure(0, weight=1)
courses_frame.columnconfigure(1, weight=1)
courses_frame.columnconfigure(2, weight=1)
self.print_button = tk.Button(main_frame, text="Submit", bg='green', fg='white',font=12)
# add the pady and padx in the position tuple & specify width for the frames by callback
self.padx = 20
self.canvas.create_window((self.padx, 10), anchor=tk.NW, window=user_info_frame, tags='frame')
self.canvas.create_window((self.padx, 160), anchor=tk.NW, window=courses_frame, tags='frame')
self.canvas.create_window((500, 350), anchor=tk.NW, window=self.print_button, tags="button")
self.canvas.bind("<Configure>", self.onCanvasConfigure)
def onCanvasConfigure(self, e):
"""stretch canvas frames to match canvas width on resize (respecting the scrollbar and the padding)"""
self.canvas.itemconfig('frame', width=self.canvas.winfo_width() - self.padx - self.scroll.winfo_width())
if __name__ == '__main__':
app = GUI()
app.mainloop()
但是，当我最小化/最大化应用程序时，“提交”按钮不再位于中心。
我想问一下是否有办法在应用程序最大化/最小化时自动将“提交”按钮置于中央。
请参阅上面发布的代码
我试图在 ttkbootstrap Tableview 中获取所选行的行数据，与 tkinter treeview 一样，我总是只使用 .bind("<>",my_func) ，而 my_func 将继续完成这项工作。
这是我使用的代码，当从表视图中选择一行时，没有迹象表明 on_tv_select 运行。在这种情况下，我不清楚如何获取所选行的数据。
import tkinter as tk
import ttkbootstrap as ttk
from ttkbootstrap.tableview import Tableview
def on_tv_select(event):
print(f".. I was selected")
if __name__ == '__main__':
colData = [{'text': 'carID', 'stretch': True},
{'text': 'Make', 'stretch': True},
{'text': 'Model', 'stretch': True}]
rowData = [(1,'Make ZZ', 'Model BA'),
(2,'Make DD', 'Model Ed'),
(3,'Z Dude','That other')]
mainWindow = tk.Tk()
mainWindow.title("POC-Main Window")
myTableView = Tableview(master=mainWindow,coldata=colData,rowdata=rowData,paginated=True,searchable=True,bootstyle='primary')
myTableView.pack(fill='both', expand=True, padx=10, pady=10)
myTableView.bind("<<TreeviewSelect>>",on_tv_select)
mainWindow.mainloop()
我确实看到了这篇文章How do I getcontents of selected row using Python and ttkbootstrap's tableview? 这表明bind_all绑定到所有小部件会给我的应用程序带来更多问题。
我使用 Tkinter（实际上是 customtkinter，如果它很重要的话）。我需要的是一个键绑定（例如转义键）。它必须在不同的框架中以不同的方式工作，并且在某些框架中我不需要它。我使用框架系统作为某种选项卡。根据其他主题中的答案，我假设框架默认情况下没有按键事件绑定，并且 ppl 建议编写
frame.focus_set()为能够绑定键盘按钮。但这个漂亮的解决方案对我没有帮助。但对我来说最大的谜团是为什么这个例子运行良好：
from tkinter import *
main = Tk()
def leftKey(event):
print ("Left key pressed")
def rightKey(event):
print ("Right key pressed")
frame = Frame(main, width=100, height=100)
frame.bind('<Left>', leftKey)
frame.bind('<Right>', rightKey)
frame.focus_set()
frame.pack()
main.mainloop()
而且我的代码忽略了转义按钮：（警告！我知道我的代码风格很糟糕，请不要侮辱）
class MainFrame(customtkinter.CTkFrame):
def __init__(self, master, **kwargs):
super().__init__(master, corner_radius=0, **kwargs)
'''some code'''
class WorldInfoFrame(MainFrame):
def __init__(self, master):
super().__init__(master)
'''some code'''
self.bind("<Escape>", self.wrapper_info_button_pressed)
self.focus_set()
@staticmethod
def info_button_pressed():
print("static")
app.world_frame.info_button_released()
'''some code'''
def wrapper_info_button_pressed(self, event):
print("Wrapper")
self.info_button_pressed()
里面的内容app.world_frame.info_button_released()并不重要，我的代码甚至不打印“Wrapper”。好吧，我希望有人可以帮助我或推动我走向正确的方向......
我有一个 tkinter 应用程序，包含三个主要水平区域：
当我水平调整窗口大小时，该应用程序运行良好：
但是当我垂直调整大小时，我很高兴：
但是，我希望条目以某种比例方式展开以填充剩余空间，而不是聚集在中心。这可能吗？
import tkinter as tk
from tkinter import ttk
PAD = 5
def _header_frame(container):
frame = ttk.Frame(container)
frame.grid(row=0, column=0)
header = ttk.Label(frame, text='Header', font=('Arial', 16))
header.grid(row=0, column=0, columnspan=2, sticky=tk.EW, padx=PAD)
def _main_frame(container):
frame = ttk.Frame(container, style='red.TFrame')
frame.grid(row=1, column=0, sticky=tk.EW)
frame.rowconfigure(0, weight=1)
frame.rowconfigure(1, weight=10)
frame.rowconfigure(2, weight=1)
frame.columnconfigure(0, weight=1)
frame.columnconfigure(1, weight=5)
label = ttk.Label(frame, text='label 1')
label.grid(row=0, column=0, sticky=tk.NE, padx=PAD)
entry = ttk.Entry(frame)
entry.grid(row=0, column=1, sticky=tk.EW, padx=PAD)
padding = ttk.Label(frame, text='')
padding.grid(row=1, column=0)
label = ttk.Label(frame, text='label 2')
label.grid(row=2, column=0, sticky=tk.SE, padx=PAD)
entry = ttk.Entry(frame)
entry.grid(row=2, column=1, sticky=tk.EW, padx=PAD)
padding = ttk.Label(frame, text='')
padding.grid(row=3, column=0)
label = ttk.Label(frame, text='label 3')
label.grid(row=4, column=0, sticky=tk.SE, padx=PAD)
entry = ttk.Entry(frame)
entry.grid(row=4, column=1, sticky=tk.EW, padx=PAD)
def _button_frame(container) -> None:
"""Create button row."""
frame = ttk.Frame(container)
frame.grid(row=3, column=0, sticky=tk.EW, padx=PAD, pady=PAD)
frame.columnconfigure(0, weight=1)
frame.columnconfigure(1, weight=10)
frame.columnconfigure(2, weight=1)
process_button = ttk.Button(
frame,
text='Save',
)
process_button.grid(row=0, column=0, sticky=tk.W)
padding = ttk.Label(frame, text='')
padding.grid(row=0, column=1)
quit_button = ttk.Button(frame, text='Quit', command=dismiss)
quit_button.grid(row=0, column=2, sticky=tk.E)
def dismiss():
root.grab_release()
root.destroy()
root = tk.Tk()
# style = ttk.Style()
# style.configure('TFrame', background='yellow')
# style.configure('blue.TFrame', background='blue')
# style.configure('green.TFrame', background='green')
# style.configure('red.TFrame', background='red')
root.rowconfigure(0, weight=1)
root.rowconfigure(1, weight=10)
root.rowconfigure(2, weight=1)
root.columnconfigure(0, weight=1)
_header_frame(root)
_main_frame(root)
_button_frame(root)
root.mainloop()
我想要弹出窗口上有红色边框。边框宽度有效，但颜色无效。边框颜色仍然是黑色，而不是红色。我尝试了两种不同的方法。两者均呈现黑色边框。
方法#1（首选）
import tkinter as tk
from tkinter.scrolledtext import ScrolledText
def display_dataframe():
# Create a tkinter window
window = tk.Tk()
window.title('Stock Alert')
# Create a scrolled text widget to display the DataFrame
text_widget = ScrolledText(window, width=100, height=15, borderwidth=5, relief="solid", highlightbackground="red")
text_widget.insert(tk.END, alert_list_display.to_string(index=False)) # Insert DataFrame content
text_widget.pack()
# Start the tkinter main loop
window.mainloop()
# Call the function to display the DataFrame in a pop-up window
display_dataframe()
方法#2
import tkinter as tk
from tkinter import scrolledtext
def change_border_color(frame, color):
frame.configure(highlightbackground=color)
# Create a tkinter window
window = tk.Tk()
window.title('ScrolledText Border Color')
# Create a custom frame with a ScrolledText widget
frame = tk.Frame(window, borderwidth=10, relief="solid", highlightbackground="red")
frame.pack()
text_widget = scrolledtext.ScrolledText(frame, width=100, height=15)
text_widget.pack(fill="both", expand=True)
# Change the border color of the custom frame
change_border_color(frame, "blue")
# Start the tkinter main loop
window.mainloop()