我希望这不是一个重复的问题,因为这里已经提出了一个解决方案,我很难让它起作用。(或者,我可以将其发布在同一讨论中)
目标:
用户在主窗口中输入一些数据,如果单击,则会出现一个带有父数据的新子窗口,最终对其进行操作,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:
如何从子级引用父级方法(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'
错误消息告诉您问题出在哪里:它说trackApp
没有属性'app'
,而查看该类的定义时,我看不到任何属性'app'
。
为了让您的子窗口知道它是父窗口,您需要为其提供对父窗口的引用。因此,在创建窗口时,您要传递参考,在子窗口中,您应使用参考。
看起来您正在尝试执行此操作,但是您传递了错误的值,然后就没有使用该值。您需要将代码修改为如下所示:
class trackApp(Frame):
...
def dialogWindow(self):
...
childDialog=childWindow(top,mainList, self)
class childWindow(Frame):
def childDestroy(self):
...
self.app.new_data(self, self.data)
...
本文收集自互联网,转载请注明来源。
如有侵权,请联系[email protected] 删除。
我来说两句