I'm creating a program where I have two entries for receiving some values from the user. With that values, I want to make some calculations and display the result in a label. I don´t want to use any kind of button or widgets to refresh the value of the label. I've tried using bind events for that, but I haven't found any event that works when the entry value changes. I hope that my question is understood. Thankyou.
self.Capacity_Entry=Entry(self.Window,borderwidth=3,textvariable=self.Capacity)
self.Capacity_Entry.grid(row=3,column=0)
self.Capacity_Entry.bind('<Enter>',self.calculate_unknown_variable)
self.Voltage_Entry=Entry(self.Window,borderwidth=3,textvariable=self.Voltage)
self.Voltage_Entry.grid(row=3,column=2)
self.Voltage_Entry.bind('<Enter>',self.calculate_unknown_variable)
self.Energy_label=Label(self.Window)
self.Energy_label.grid(row=1,column=4,)
def calculate_unknown_variable(self,*args):
self.V=float(self.Voltage.get())
self.C=float(self.Capacity.get())
self.E=0.5*self.C*self.V*self.V
self.Result_Label.config(text=self.E)
You can use "<KeyRelease>" event to do so.
Everytime you release a key on keyboard, on releasing the key the method associated will be triggered.
self.Capacity_Entry.bind("<KeyRelease>",self.calculate_unknown_variable))