当我单击列表框中的每个项目时,将打印一个文本,该文本来自我应用程序“文本框”小部件中的db。我希望也能使用我的按钮做到这一点。我的意思是,当用户在输入框中搜索单词并将列表降低到1个项目时,我希望能够以3种方式选择该项目(在列表中单击它,单击我的按钮,然后按我的Return键键盘)。现在点击有效。我应该如何在enter_意义函数中配置按钮事件?
import sqlite3 as sqlite
import tkinter as tk
from tkinter import ttk
# GUI Widgets
class EsperantoDict:
def __init__(self, master):
self.search_var = tk.StringVar()
self.search_var.trace("w", lambda name, index, mode: self.update_list())
self.frame_header = ttk.Frame(master, relief=tk.FLAT)
self.frame_header.config(style="TFrame")
self.frame_header.pack(side=tk.TOP, padx=5, pady=5)
ttk.Label(self.frame_header, image=self.small_logo).grid(row=0, column=0, stick="ne", padx=5, pady=5, rowspan=2)
ttk.Label(self.frame_header, text='EsperantoDict', font=('Arial', 18, 'bold')).grid(row=0, column=1)
self.frame_content = ttk.Frame(master)
self.frame_content.config(style="TFrame")
self.frame_content.pack()
self.entry_search = ttk.Entry(self.frame_content, textvariable=self.search_var, width=30)
self.entry_search.bind('<FocusIn>', self.entry_delete)
self.entry_search.bind('<FocusOut>', self.entry_insert)
self.entry_search.grid(row=0, column=0, padx=5)
self.entry_search.focus()
self.entry_search.bind("<KeyRelease>", self.edit_input)
self.button_search = ttk.Button(self.frame_content, text=u"Serĉu", command=self.enter_meaning)
self.photo_search = tk.PhotoImage(file=r'C:\EsperantoDict\search.png')
self.small_photo_search = self.photo_search.subsample(3, 3)
self.button_search.config(image=self.small_photo_search, compound=tk.LEFT, style="TButton")
self.button_search.grid(row=0, column=2, columnspan=1, sticky='nw', padx=5)
self.button_search.bind('<Return>')
self.listbox = tk.Listbox(self.frame_content, height=30, width=30)
self.listbox.grid(row=1, column=0, padx=5)
self.scrollbar = ttk.Scrollbar(self.frame_content, orient=tk.VERTICAL, command=self.listbox.yview)
self.scrollbar.grid(row=1, column=1, sticky='nsw')
self.listbox.config(yscrollcommand=self.scrollbar.set)
self.listbox.bind('<<ListboxSelect>>', self.enter_meaning)
self.textbox = tk.Text(self.frame_content, relief=tk.GROOVE, width=60, height=30, borderwidth=2)
self.textbox.config(wrap='word')
self.textbox.grid(row=1, column=2, sticky='w', padx=5)
# SQLite
self.db = sqlite.connect(r'C:\EsperantoDict\test.db')
self.cur = self.db.cursor()
self.cur.execute("SELECT Esperanto FROM Words ORDER BY Esperanto")
for row in self.cur:
self.listbox.insert(tk.END, row)
self.update_list()
def update_list(self):
self.listbox.delete(0, tk.END)
search_term = self.search_var.get().lower()
if search_term == 'type to search':
search_term = ''
self.cur.execute("SELECT Esperanto FROM Words WHERE LOWER(Esperanto) LIKE ? ORDER BY Esperanto",
('%' + search_term + '%',))
for row in self.cur:
item = row[0]
self.listbox.insert(tk.END, item)
for row in range(0, self.listbox.size(), 2):
self.listbox.itemconfigure(row, background="#f0f0ff")
def edit_input(self, tag):
word_to_esp = {'gx': 'ĝ', 'cx': 'ĉ', 'hx': 'ĥ', 'jx': 'ĵ', 'ux': 'ŭ', 'sx': 'ŝ'}
user_input = self.entry_search.get()
user_input = user_input.lower()
for i in word_to_esp:
if user_input.__contains__(i):
a = user_input.replace(i, word_to_esp[i])
return self.search_var.set(a)
def enter_meaning(self, tag=None):
index = self.listbox.curselection()
esperanto = self.listbox.get(index)
results = self.cur.execute("SELECT English FROM Words WHERE Esperanto = ?", (esperanto,))
for row in results:
self.textbox.delete(1.0, tk.END)
self.textbox.insert(tk.END, row[0])
def entry_delete(self, tag):
if self.entry_search.get():
self.entry_search.delete(0, tk.END)
self.textbox.delete(1.0, tk.END)
return None
def entry_insert(self, tag):
if self.entry_search.get() == '':
self.entry_search.insert(0, "Type to Search")
return None
def main():
root = tk.Tk()
EsperantoDict(root)
root.mainloop()
if __name__ == '__main__': main()
# db tbl name: Words
# db first field name: Esperanto
# db second field name: English