Python tkinter Treeview 小部件插入数据
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tkinter Treeview widget inserting data
提问by marco alexis
This is my sample code. I want the items typed in the entry to be inserted to the treeview when the enter button is pressed. Im new to python and tkinter and there is not much tuts about treeview.
这是我的示例代码。我希望在按下输入按钮时将条目中键入的项目插入到树视图中。我是 python 和 tkinter 的新手，关于 treeview 的介绍不多。
class PurchaseEntry(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
self.controller = controller
PurchaseEntry.configure(self, bg='white')
label = ttk.Label(self, text='Purchase Entry', font=LARGE_FONT2)
label.grid(row=0, columnspan=3, sticky='w')
purchase_entry = ttk.Label(self, text='Purchase Entry:')
purchase_entry.grid(row=1, column=0)
self.entry_val = tk.StringVar()
self.entry_1 = ttk.Entry(self, width=100, textvariable=self.entry_val)
self.entry_1.grid(row=1, column=2, columnspan=2, sticky='w')
self.entry_1.focus()
self.entry_btn = ttk.Button(self,text='Enter', command=self.insert_value)
self.entry_btn.grid(row=1, column=4, columnspan=2, sticky='w')
self.chat1 = ttk.Treeview(self)
chat1 = ttk.Treeview( self, height=28, columns=('dose', 'date modified'), selectmode="extended")
chat1.heading('#0', text='item', anchor=tk.CENTER)
chat1.heading('#1', text='dose', anchor=tk.CENTER)
chat1.heading('#2', text='date modified', anchor=tk.CENTER)
chat1.column('#1', stretch=tk.YES, minwidth=50, width=100)
chat1.column('#2', stretch=tk.YES, minwidth=50, width=120)
chat1.column('#0', stretch=tk.YES, minwidth=50, width=400)
chat1.grid(row=2, column=2, columnspan=4, sticky='nsew')
def insert_value(self):
value = self.entry_val.get()
# Inserts data written in the entry box to the treeview widget when Enter button is pressed.
# Clears the Entry box, ready for another data entry.
self.entry_1.delete(0, 'end')
self.chat1.insert('WHAT SHOULD I GIVE AS AN ARGUMENT?')
What should I pass as an argument? Or is treeview the right widget for this or can someone suggest a widget suitable for this issue? thanks
我应该传递什么作为参数？或者 treeview 是适合此问题的小部件还是有人可以建议适合此问题的小部件？谢谢
回答by Billal Begueradj
You seem to be interested only in how to insert data the user types within Tkinter.Entry()widgets into ttk.Treeview()after a Tkinter.Button()click.
您似乎只对单击后如何将用户在Tkinter.Entry()小部件中键入的数据插入感兴趣。ttk.Treeview()Tkinter.Button()
I designed a simple interface to show you how to resolve this. You can adapt my solution to your problem.
我设计了一个简单的界面来向您展示如何解决这个问题。您可以根据您的问题调整我的解决方案。
Here is how the application demo looks like:
以下是应用程序演示的样子：
So I set a counter self.ito name the items. But you can add a label and an entry for this purpose instead and you insert items names similarly to the the other Tkinter.Entry()entries.
所以我设置了一个计数器self.i来命名项目。但是您可以为此添加一个标签和一个条目，并插入与其他Tkinter.Entry()条目类似的项目名称。
The insertion method is this one:
插入方法是这样的：
def insert_data(self):
"""
Insertion method.
"""
self.treeview.insert('', 'end', text="Item_"+str(self.i),
values=(self.dose_entry.get() + " mg",
self.modified_entry.get()))
# Increment counter
self.i = self.i + 1
May be the main trick here is to retrieve the data the user types using get()method which thing is represented by self.dose_entry.get()and self.dose_modified.get()actions.
这里的主要技巧可能是使用get()表示事物的方法self.dose_entry.get()和self.dose_modified.get()动作来检索用户键入的数据。
This is done, you need now to bind this method to the button to be pressed to trigger the insertion action using the commandoption:
完成后，您现在需要将此方法绑定到要按下的按钮以使用command选项触发插入操作：
self.submit_button = Tkinter.Button(self.parent, text="Insert",
command=self.insert_data)
Full program:
完整程序：
'''
Created on Mar 21, 2016
@author: Bill Begueradj
'''
try:
import Tkinter
import ttk
except ImportError: # Python 3
import tkinter as Tkinter
import tkinter.ttk as ttk
class Begueradj(Tkinter.Frame):
'''
classdocs
'''
def __init__(self, parent):
'''
Constructor
'''
Tkinter.Frame.__init__(self, parent)
self.parent=parent
self.initialize_user_interface()
def initialize_user_interface(self):
"""Draw a user interface allowing the user to type
items and insert them into the treeview
"""
self.parent.title("Canvas Test")
self.parent.grid_rowconfigure(0, weight=1)
self.parent.grid_columnconfigure(0, weight=1)
self.parent.config(background="lavender")
# Define the different GUI widgets
self.dose_label = Tkinter.Label(self.parent, text="Dose:")
self.dose_entry = Tkinter.Entry(self.parent)
self.dose_label.grid(row=0, column=0, sticky=Tkinter.W)
self.dose_entry.grid(row=0, column=1)
self.modified_label = Tkinter.Label(self.parent,
text="Date Modified:")
self.modified_entry = Tkinter.Entry(self.parent)
self.modified_label.grid(row=1, column=0, sticky=Tkinter.W)
self.modified_entry.grid(row=1, column=1)
self.submit_button = Tkinter.Button(self.parent, text="Insert",
command=self.insert_data)
self.submit_button.grid(row=2, column=1, sticky=Tkinter.W)
self.exit_button = Tkinter.Button(self.parent, text="Exit",
command=self.parent.quit)
self.exit_button.grid(row=0, column=3)
# Set the treeview
self.tree = ttk.Treeview(self.parent,
columns=('Dose', 'Modification date'))
self.tree.heading('#0', text='Item')
self.tree.heading('#1', text='Dose')
self.tree.heading('#2', text='Modification Date')
self.tree.column('#1', stretch=Tkinter.YES)
self.tree.column('#2', stretch=Tkinter.YES)
self.tree.column('#0', stretch=Tkinter.YES)
self.tree.grid(row=4, columnspan=4, sticky='nsew')
self.treeview = self.tree
# Initialize the counter
self.i = 0
def insert_data(self):
"""
Insertion method.
"""
self.treeview.insert('', 'end', text="Item_"+str(self.i),
values=(self.dose_entry.get() + " mg",
self.modified_entry.get()))
# Increment counter
self.i = self.i + 1
def main():
root=Tkinter.Tk()
d=Begueradj(root)
root.mainloop()
if __name__=="__main__":
main()
Note:
笔记：
I coded this in Python 2.7, but it should work if you're using Python 3.x.
我是用 Python 2.7 编写的，但如果您使用的是 Python 3.x，它应该可以工作。
