我希望这不是一个重复的问题,因为提出了一个解决方案here,我很难让它发挥作用。 (或者我可以在同一个讨论中发布这个)
目标:
在主窗口中,用户输入一些数据,如果单击,则会出现一个带有父数据的新子窗口,最终对它们进行操作,然后将结果发送回父窗口小部件。
使用的代码:
from Tkinter import *
class trackApp(Frame):
def __init__(self, master):
Frame.__init__(self, master)
self.mainVar1 = IntVar()
self.mainVar2 = IntVar()
self.mainVar1.set(100)
self.mainVar2.set(100)
self.master = master
self.master.geometry('400x200+100+200')
self.master.title('MAIN WINDOW')
self.label1=Label(self.master,text='Variable1 : ').grid(row=1,column=1)
self.mainEntry1=Entry(self.master,textvariable=self.mainVar1).grid(row=1,column=2)
self.label2=Label(self.master,text='Variable2 : ').grid(row=2,column=1)
self.mainEntry2=Entry(self.master,textvariable=self.mainVar2).grid(row=2,column=2)
self.button1=Button(self.master,text='Child',command=self.dialogWindow).grid(row=7,column=2)
def new_data(self, data):
self.mainEntry1.delete(0,END)
self.mainEntry1.insert(0,self.data['var1'])
self.mainEntry2.delete(0,END)
self.mainEntry2.insert(0,self.data['var2'])
def dialogWindow(self):
# Build a list from control variables used in the main window text entry boxes
mainList = [self.mainVar1.get(),self.mainVar2.get()]
top=Toplevel(self.master)
childDialog=childWindow(top,mainList, self.master)
class childWindow(Frame):
# Pass data (list) to the child
def __init__(self, master, list, app):
self.list = list
self.app = app
self.master = master
self.master.geometry('300x100+150+250')
self.master.title('CHILD WINDOW')
# Define control variabels to be used with child window text entry widgets
self.childvar1 = IntVar()
self.childvar2 = IntVar()
# Fill child window text entry widgets with inf. from parent window
self.childvar1.set(list[0])
self.childvar2.set(list[1])
# Text entry widgets
self.label1=Label(self.master,text='Enter New value 1').grid(row=0,column=1)
self.childEntry1=Entry(self.master,textvariable=self.childvar1).grid(row=0,column=2)
self.label2=Label(self.master,text='Enter New value 2').grid(row=1,column=1)
self.childEntry2=Entry(self.master,textvariable=self.childvar2).grid(row=1,column=2)
self.button1=Button(self.master,text='OK',command=self.childDestroy).grid(row=3,column=1)
def childDestroy(self):
self.data = {}
self.data['var1'] = self.childvar1.get()
self.data['var2'] = self.childvar2.get()
trackApp.app.new_data(self, self.data) # <<<<<<<<< How to call the parent new_data method
self.master.destroy()
def main():
root = Tk()
app = trackApp(root)
root.mainloop()
if __name__ == "__main__":
main()
问题:
如何从孩子那里引用父方法( new_data )?
错误:
/usr/bin/python2.7 /<path>/child-dialog.py
Exception in Tkinter callback
Traceback (most recent call last):
File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 1489, in __call__
return self.func(*args)
File "/<path>/child-dialog.py", line 77, in childDestroy
trackApp.app.new_data(self, self.data) # <<<<<<<<< How to call the parent new_data method
AttributeError: class trackApp has no attribute 'app'
答案 0 :(得分:1)
错误消息告诉您问题的确切原因:它表示trackApp
没有属性'app'
,并且查看该类的定义时,我看不到属性'app'
。
要让您的子窗口知道它的父级,您需要为其提供对父级的引用。因此,在创建窗口时,您将传入引用,并在子窗口中使用引用。
看起来你正试图这样做,但是你输入了错误的值,然后你没有使用该值。您需要修改代码,如下所示:
class trackApp(Frame):
...
def dialogWindow(self):
...
childDialog=childWindow(top,mainList, self)
class childWindow(Frame):
def childDestroy(self):
...
self.app.new_data(self, self.data)
...
答案 1 :(得分:-1)
感谢Bryan的回答。以下是我所做的更改:
将父(self)传递给子窗口
def dialogWindow(self):
childDialog=childWindow(top,mainList, self)
使用父实例(self)调用父方法
def childDestroy(self)
self.app.new_data(self.data)
以及以下更新主窗口小部件:
def new_data(self, data):
self.mainVar1.set(data['var1'])
self.mainVar2.set(data['var2'])
感谢您的帮助。