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Author: jimfred

tkGrid_IntVar.py

@@ -0,0 +1,52 @@
+'''
+Simple tkinter grid application
+'''
+
+import os
+import tkinter
+import tkinter.ttk
+import lib.dbg
+
+
+class App:
+
+    # Add what I think is a missing integer property to tkinter.IntVar
+    class IntVar2(tkinter.IntVar):
+        def __init__(self):
+            tkinter.IntVar.__init__(self)
+            self._i = 0  # internal value for property 'i'.
+
+        @property
+        def i(self):
+            return self._i
+
+        @i.setter
+        def i(self, i):
+            self._i = i
+            self.set(i)
+
+    def __init__(self):
+        self.root = tkinter.Tk()
+        self.root.title(os.path.basename(__file__))
+
+        tkinter.Label(self.root, text='Cnt').grid(row=1, column=0)
+        self.cnt = [App.IntVar2() for i in range(5) ]
+        for i in range(5):
+            tkinter.Label(self.root, text='Cnt{0}'.format(i)).grid(row=0, column=1 + i)
+            tkinter.Label(self.root, textvariable=self.cnt[i]).grid(row=1, column=1 + i)
+
+        self.sum = App.IntVar2()
+        tkinter.Label(self.root, text='sum').grid(row=2, column=0)
+        tkinter.Label(self.root, textvariable=self.sum).grid(row=2, column=1, columnspan=5, sticky='ew')
+
+        self.update_clock()
+        self.root.mainloop()
+
+    def update_clock(self):
+        self.root.after(500, self.update_clock)
+        for i in range(5):
+            self.cnt[i].i += 1
+
+        self.sum.i = sum([self.cnt[i].i for i in range(5)])
+
+app = App()