此ttk calendar class根据tkinter制作日历。如何让它返回所选日期的值?下面是我尝试过的,它返回' NoneType对象不可调用':
def test():
import sys
root = Tkinter.Tk()
root.title('Ttk Calendar')
ttkcal = Calendar(firstweekday=calendar.SUNDAY)
ttkcal.pack(expand=1, fill='both')
x = ttkcal.selection() #this and the following line are what i inserted
print 'x is: ', x #or perhaps return x
if 'win' not in sys.platform:
style = ttk.Style()
style.theme_use('clam')
root.mainloop()
if __name__ == '__main__':
test()
答案 0 :(得分:7)
选择是一个@property,因此您需要以下内容来验证您的代码:
x = ttkcal.selection
此外,使用此日历,您可以在关闭callendar小部件后(即在mainloop()之后)获取所选日期。因此,您的代码应该是:
def test2():
import sys
root = Tkinter.Tk()
root.title('Ttk Calendar')
ttkcal = Calendar(firstweekday=calendar.SUNDAY)
ttkcal.pack(expand=1, fill='both')
if 'win' not in sys.platform:
style = ttk.Style()
style.theme_use('clam')
root.mainloop()
x = ttkcal.selection
print 'x is: ', x
以防万一。如果您不想关闭日历窗口以获取所选值,但您希望获得它们并且#34;生活"点击它们,例如将它们显示在其他窗口的标签中,您可以执行以下操作:
首先扩展Calendar类以添加每次选择某个日期时将调用的回调函数:
class Calendar2(Calendar):
def __init__(self, master=None, call_on_select=None, **kw):
Calendar.__init__(self, master, **kw)
self.set_selection_callbeck(call_on_select)
def set_selection_callbeck(self, a_fun):
self.call_on_select = a_fun
def _pressed(self, evt):
Calendar._pressed(self, evt)
x = self.selection
#print(x)
if self.call_on_select:
self.call_on_select(x)
有了这个,你可以制作新的test2示例,它有两个窗口。一个用于日历,一个窗口带有一些标签(例如):
class SecondFrame(Tkinter.Frame):
def __init__(self, *args, **kwargs):
Tkinter.Frame.__init__(self, *args, **kwargs)
self.l = Tkinter.Label(self, text="Selected date")
self.l.pack()
self.pack()
def update_lable(self, x):
self.l['text'] = x;
def test2():
import sys
root = Tkinter.Tk()
root.title('Ttk Calendar')
ttkcal = Calendar2(firstweekday=calendar.SUNDAY)
ttkcal.pack(expand=1, fill='both')
if 'win' not in sys.platform:
style = ttk.Style()
style.theme_use('clam')
sf = SecondFrame(Tkinter.Toplevel())
ttkcal.set_selection_callbeck(sf.update_lable)
root.mainloop()
在此示例中,每次在日历中选择某个日期时,SecondFrame中的标签都会更新。