Errors when trying to disable tkinter checkbutton

[rrick_88]

    Hello,

    I am having an issue disabling a tkinter checkbutton. I am able to get the value, but when trying to disable it I keep getting the below errors. I have tried StringVar instead of IntVar, but get similar errors. Not sure what am doing wrong. Any help is greatly appreciated!

    

####################
class checkboxes():
####################

    #===================
    def __init__(self, master):
    #
    #===================

        self.master = master



    #===================
    def addCheckBox(self, txt, w, h, x, y, fnt, clr, cmd):
    #
    #===================

        self.var1 = tk.IntVar()

        self.chkbx= Checkbutton(self.master, width=w, height=h, text=txt, variable=self.var1, onvalue=1, offvalue=0, font=fnt, bg=clr, command=cmd)
        self.chkbx.config(state="normal") #this works here only
        self.chkbx.place(x=x, y=y)
        return self.var1

    #===================
    def chkbxClick(self):
    #
    #===================

        print (self)
        print(self, chkbxItemCard.get())

        if chkbxItemCard.get() == 1 or chkbxPicklist.get() == 1 or chkbxQuickPick.get() == 1:
            btnConvert["state"] = "normal"

        if chkbxItemCard.get() == 0 and chkbxPicklist.get() == 0 and chkbxQuickPick.get() == 0:
            btnConvert["state"] = "disabled"

    #      chkbxItemCard.config(state="disabled") #AttributeError: 'IntVar' object has no attribute 'config'
    #      chkbxItemCard["state"] = "disabled" #TypeError: 'IntVar' object does not support item assignment



        chkbxItemCard = checkboxes.addCheckBox(master, 'TestItemCard', 30, 1, 45, 470, 'Aerial, 15', 'AntiqueWhite1', lambda: checkboxes.chkbxClick("chkItemCard")) #self, txt, w, h, x, y, fnt, clr, cmd