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author | Georg Brandl <georg@python.org> | 2010-12-30 21:33:07 +0000 |
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committer | Georg Brandl <georg@python.org> | 2010-12-30 21:33:07 +0000 |
commit | 7fafbc95c0c963438197c9a43fe893c4ea6fe759 (patch) | |
tree | 5c9ceda4bdc5260236a230554b9ed56b8c0cdbd3 /Demo/tkinter/matt/entry-with-shared-variable.py | |
parent | 6f17e2df29a865a29447531e89fb22be710e382d (diff) | |
download | cpython-7fafbc95c0c963438197c9a43fe893c4ea6fe759.tar.gz cpython-7fafbc95c0c963438197c9a43fe893c4ea6fe759.zip |
More cleanup: Move some demos into a dedicated Tools/demo dir, move 2to3 demo to Tools, and remove all the other Demo content.
Diffstat (limited to 'Demo/tkinter/matt/entry-with-shared-variable.py')
-rw-r--r-- | Demo/tkinter/matt/entry-with-shared-variable.py | 45 |
1 files changed, 0 insertions, 45 deletions
diff --git a/Demo/tkinter/matt/entry-with-shared-variable.py b/Demo/tkinter/matt/entry-with-shared-variable.py deleted file mode 100644 index 7d93da764e0..00000000000 --- a/Demo/tkinter/matt/entry-with-shared-variable.py +++ /dev/null @@ -1,45 +0,0 @@ -from tkinter import * - -# This program shows how to make a typein box shadow a program variable. - -class App(Frame): - def __init__(self, master=None): - Frame.__init__(self, master) - self.pack() - - self.entrythingy = Entry(self) - self.entrythingy.pack() - - self.button = Button(self, text="Uppercase The Entry", - command=self.upper) - self.button.pack() - - # here we have the text in the entry widget tied to a variable. - # changes in the variable are echoed in the widget and vice versa. - # Very handy. - # there are other Variable types. See Tkinter.py for all - # the other variable types that can be shadowed - self.contents = StringVar() - self.contents.set("this is a variable") - self.entrythingy.config(textvariable=self.contents) - - # and here we get a callback when the user hits return. we could - # make the key that triggers the callback anything we wanted to. - # other typical options might be <Key-Tab> or <Key> (for anything) - self.entrythingy.bind('<Key-Return>', self.print_contents) - - def upper(self): - # notice here, we don't actually refer to the entry box. - # we just operate on the string variable and we - # because it's being looked at by the entry widget, changing - # the variable changes the entry widget display automatically. - # the strange get/set operators are clunky, true... - str = self.contents.get().upper() - self.contents.set(str) - - def print_contents(self, event): - print("hi. contents of entry is now ---->", self.contents.get()) - -root = App() -root.master.title("Foo") -root.mainloop() |