我无法弄清楚如何将'Enter'键与函数或更具体的按钮绑定。我想将'Enter'键与self.search函数绑定。我有下面的代码,我尝试了很多不同的方法。现在它只是清除输入框。任何帮助将不胜感激。
class MainGUI:
def __init__(self, master):
self.master = master
master.minsize(width=500, height=175)
master.title("Serial Number Decode")
self.label = Label(master, text="Serial Number Decoder")
self.label.pack()
self.textBox=Text(master, height=1, width=30)
self.textBox.place(relx=0.5, rely=0.1, anchor='n')
self.textBox2=Text(master, height=2, width=50,font=("Sans",12))
self.textBox2.place(relx=0.5, rely=0.5, anchor='s')
self.search_button = Button(master, text="Search", command=self.search)
self.search_button.place(relx=0.75, rely=0.15, anchor='w')
#self.search_button.bind('<Return>', self.search)
self.master.bind('<Return>', self.search) #Just clears the entry box
self.multiLook_button = Button(master, text="MultiLook", command=self.multiLook)
self.multiLook_button.place(relx=0.7, rely=0.6, anchor='w')
self.multiSearch_button = Button(master, text="MultiSearch", command=self.multiSearch)
self.multiSearch_button.place(relx=0.84, rely=0.6, anchor='w')
self.close_button = Button(master, text="Close", command=master.quit)
self.close_button.place(relx=0.85, rely=0.15, anchor='w')
答案 0 :(得分:3)
假设您在班级中定义了search
,那么您就走上正轨:
class MainGUI():
def __init__(self, master):
# ... Code ...
def search(self, event):
# ... Code ...
您可以按原样访问该方法:
self.search_button.bind('<Return>', self.search)
使用此方法,search_button
窗口小部件必须具有焦点,以便在按下Enter时触发事件绑定。
此外,我将建议一种不同的方式来构建您的应用程序,这将有助于为您的代码添加可读性,并允许更容易的扩展,例如,如果您希望将来添加到应用程序。在开发GUI时,最好采用有条理的方法,即系统化或逐步 - 模块化可以帮助解决这个问题。
import tkinter as tk
class MainGUI(tk.Frame):
def __init__(self, master=None):
tk.Frame.__init__(self, master)
self.master.minsize(width=500, height=175)
self.master.title("Serial Number Decode")
self.main_label()
self.text_boxes()
self.buttons()
def main_label(self):
self.label = tk.Label(self, text='Serial Number Decoder')
self.label.pack()
def text_boxes(self):
# First we create the widgets
self.textBox = tk.Text(self, height=1, width=30)
self.textBox2 = tk.Text(self, height=2, width=50, font=("Sans",12))
# Next place them within the GUI
self.textBox.place(relx=0.5, rely=0.1, anchor='n')
self.textBox2.place(relx=0.5, rely=0.5, anchor='s')
def buttons(self):
self.search_button = tk.Button(self, text="Search", command=self.search)
# You can set a widget to have the 'focus' like so:
self.search_button.focus()
# And bind an event on focus in, focus out, enter, shift, etc. - e.g.:
self.search_button.bind('<FocusIn>', self.do_something)
self.search_button.bind('<FocusOut>', self.do_something_else)
self.search_button.bind('<Return>', self.search)
# Other buttons below...
def search(self, event=None):
# Do something now that the event has been triggered
有几点需要注意 - def search(self, event=None)
,我在这里给事件关键字参数设置了默认值None
,因为如果单击按钮(来自设置command=self.search
),则会发生'事件' '将不传递给方法,但是如果从绑定触发方法,则会传递'event'。另外,我在代码示例中并不是很透彻,我编写了一些代码,并对其进行了结构化,纯粹是为了示例,例如,我没有在GUI中注册搜索按钮,因此它不会显示,或者self.do_something
未定义,因此运行此操作实际上会引发AttributeError
。我希望这一切都有帮助!最后,这是tkinter的一个很好的资源,NMT Tkinter。