Besserer Stil: Attribute treten deutlich im Konstruktor hervor.
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		@@ -125,10 +125,19 @@ class FeetToMeter(Tk):
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        self.title("Feet to Meters")
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        # Textvariablen, um Inhalte der Eingabefelder zu kontrollieren
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        self.feet = StringVar()
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        self.meters = StringVar()
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        # Event Handler (Validator) registrieren
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        self.check_entry_wrapper = self.register(self.validator.check_entry)
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        # Zugriff auf Stilinformationen
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        self.s = ttk.Style()
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        # Zugriff auf Statusleiste
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        self.frame_statusbar = ttk.Frame(self)
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        # Aufbau des Fensters
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        self.create_styles()
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        self.create_widgets()
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        self.bind_events()
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@@ -157,7 +166,6 @@ class FeetToMeter(Tk):
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        self.rowconfigure(0, weight=1)
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        # Eingabefeld für Länge in feet
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        self.feet = StringVar()
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        feet_entry = ttk.Entry(mainframe, width=7, textvariable=self.feet,
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                               validatecommand=(self.check_entry_wrapper, '%P'),
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                               validate='key')
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@@ -173,7 +181,6 @@ class FeetToMeter(Tk):
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        ttk.Label(mainframe, text="Meter").grid(column=3, row=2, sticky=W)
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        # Ausgabefeld für Länge in Metern
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        self.meters = StringVar()
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        meters_entry = ttk.Entry(mainframe, width=7, textvariable=self.meters)
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        meters_entry.grid(column=2, row=2, sticky=(W, E))
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        meters_entry.configure(state='readonly')  # keine Eingabe, aber selektierbar
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@@ -188,13 +195,12 @@ class FeetToMeter(Tk):
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            child.grid_configure(padx=5, pady=5)
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        # Statusbar
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        self.frame_statusbar = ttk.Frame(self)
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        self.frame_statusbar['relief'] = 'sunken'
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        self.frame_statusbar['height'] = 12
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        self.frame_statusbar['style'] = 'aFrame.TFrame'
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        self.frame_statusbar.grid_propagate(0)  # Feste Größe an Grid-Packer weitergeben
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        self.frame_statusbar.grid(column=0, row=1, sticky=W + S + E)
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        st = self.frame_statusbar
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        st['relief'] = 'sunken'
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        st['height'] = 12
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        st['style'] = 'aFrame.TFrame'
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        st.grid_propagate(0)  # Feste Größe an Grid-Packer weitergeben
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        st.grid(column=0, row=1, sticky=W + S + E)
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        # Setze Fokus in Eingabefeld
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        feet_entry.focus()
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