How to add a drop down box in Python GUI

[bkunjitam]

Hi,

How do i add a drop down box with few pre-populated strings in the same?
I could find list box and drop down menu in the HELP document of Python, but not drop down box.

Please help me in this.

Thanks,
BK

[bartonc]

Hi,

How do i add a drop down box with few pre-populated strings in the same?
I could find list box and drop down menu in the HELP document of Python, but not drop down box.

Please help me in this.

Thanks,
BK

Tkinter does not have a combobox. If you are using Tkinter, I can supply a module that requires Python Image Library to make a drop-down menu + a text entry + graphics look like a combo box, but it may need some work first. I now use wxPython for GUI.

[bkunjitam]

Tkinter does not have a combobox. If you are using Tkinter, I can supply a module that requires Python Image Library to make a drop-down menu + a text entry + graphics look like a combo box, but it may need some work first. I now use wxPython for GUI.

If that is so, could u please help me in this regard. Are there any pre requisites for the issue?

Thanks,
BK

[bartonc]

If that is so, could u please help me in this regard. Are there any pre requisites for the issue?

Thanks,
BK

I am unclear on which issue you want help with.

[bkunjitam]

Hi,

My intention is to have a drop down box (with edit facility) which would have several ip addresses. The user either can select an existing one or else type a new ip.

I could find spinbox option but thats not editable.

So how do i create such a drop down box?

Thanks,
Badri

[bartonc]

Hi,

My intention is to have a drop down box (with edit facility) which would have several ip addresses. The user either can select an existing one or else type a new ip.

I could find spinbox option but thats not editable.

So how do i create such a drop down box?

Thanks,
Badri

You still have not said which GUI you are using. If you are using Tkinter, I can supply a class, but it will take me some time to make it work for you.

[bkunjitam]

You still have not said which GUI you are using. If you are using Tkinter, I can supply a class, but it will take me some time to make it work for you.

Yes, I am using Tkinter.

[bartonc]

Yes, I am using Tkinter.

Ok, I'll tweek my module to work for you.

[ezapata]

Would you include the code so everyone could benefit?

Ok, I'll tweek my module to work for you.

[bartonc]

Would you include the code so everyone could benefit?

Yep. I'll get right on it.

[bartonc]

Yep. I'll get right on it.

As promised:

from Tkinter import *
 
## I have a working ComboBox which is editable and
## has a button around here some where. I'll keep
## looking for that. In the mean time, this Entry
## subclass shares a StringVar with the menu item
## that are created form input list(s) to achive a
## simple ChoiceBox.
 
class ChoiceBox(Entry):
    """ComboBox(parent, itemList=[], *args, kwargs)
       A simple ChoiceBox with checked menu items
       itemList may be a mix of list of strings and lists of tuples of (label, list of strings)
       for one level of sub menu items. *args and kwargs are passed to the Entry widget."""
 
    def __init__(self, parent, itemList=[], *args, **kwargs):
        Entry.__init__(self, parent, *args, **kwargs)
 
        self.pyvar = pyvar = StringVar(self)    # this is the sharing mechanism
        self.config(textvariable=pyvar)         # add the StringVar to self.
 
        self.popup = popup = Menu(self, tearoff=0)
        self.bind("<Button-1>", self.mousedown, add="+")
 
        for item in itemList:
            if type(item) == tuple:
                submenu = self.GetSubMenu(item[0])
                for subitem in item[1]:
                    self.AddCBMenuItem(submenu, subitem)
            else:
                self.AddCBMenuItem(popup, item)
 
    def GetSubMenu(self, label):
        menu = Menu(self, tearoff=0)
        self.popup.add_cascade(menu=menu, label=label)
        return menu
 
    def AddCBMenuItem(self, menu, label):
        menu.add_checkbutton(label=label,
                             command=self.MenuSelect,
                             variable=self.pyvar,   # add the StringVar to a menu.
                             onvalue=label, offvalue='')
 
    def mousedown(self, event):
        x = event.x_root - event.x
        y = event.y_root -  event.y
        self.popup.post(x, y)
        return 'break'
 
    def get(self):
        return self.pyvar.get()
 
    def clear(self):
        self.pyvar.set('')
 
    def MenuSelect(self):
        pass
 
 
 
if __name__ == '__main__':
 
 
 
    def _test():
        root = Tk()
##        cb = ChoiceBox(root, [('test', ['one', 'two', 'three'])])
        cb = ChoiceBox(root, ['one', 'two', 'three'])
        cb.pack()
        root.mainloop()
 
    _test()
 

[wordsforthewise]

Cool code, but I don't see how to enable typing in a new entry...?