Popup Menu in wxPython

In this article we will get to know about wxPython and we will create a program to make a pop-up item menu.

Pop-up menus are graphical user interfaces (GUIs) which allow us to show some specific items and options. Here in this tutorial, we will learn how to create and implement popup menus in wxPython. It is a GUI toolkit for python language which provides us with a set of bindings and allows developers to create cross platform applications having native interface.

Installing wxPython Using pip Command

pip install wxPython

in case it is not getting installed type execute following command.

pip install -U -f https://extras.wxpython.org/wxPython4/extras/linux/gtk3/ubuntu-18.04/ wxPython

To display the message box, we will use a messagebox from easygui.

To install the easygui execute the following command.

pip install easygui

EasyGUI

it is also a graphical user interface which provides us a set of pre-built dialogs, and widgets which can be easily used without coding its core functional part like Tkinter or wxPython. Using EasyGUI we can create many more fields like message box, text field, buttn and other components.

Example

import wx
import easygui
 
class PopUpMenu(wx.Menu):
   def __init__(self):
      super().__init__()

   # Add a menu item
      self.item1 = self.Append(wx.ID_ANY, "Mango")

   # Bind an event handler to the mango menu item
      self.Bind(wx.EVT_MENU, self.mango, self.item1)

   # Add another menu item
      self.item2 = self.Append(wx.ID_ANY, "Litchi")

   # Bind an event handler to the litchi menu item
      self.Bind(wx.EVT_MENU, self.litchi, self.item2)

   # Add another menu item
      self.item3 = self.Append(wx.ID_ANY, "Apple")

   # Bind an event handler to the apple menu item
      self.Bind(wx.EVT_MENU, self.apple, self.item3)

   def mango(self, event):
      easygui.msgbox("You choose Mango!", title="msg")

   def litchi(self, event):
      easygui.msgbox("You choose Litchi!", title="msg")

   def apple(self, event):
      easygui.msgbox("You choose Apple!", title="msg")


class FrameClass(wx.Frame):
   def __init__(self):
      super().__init__(None, title="Frame Simple")

   # Create a menu bar
      self.menubar = wx.MenuBar()

   # Add the pop-up menu to the menu bar
      self.menubar.Append(PopUpMenu(), "Fruit Menu")

   # Set the menu bar as the frame's menu bar
      self.SetMenuBar(self.menubar)

   # Bind a mouse event handler to the frame
      self.Bind(wx.EVT_RIGHT_DOWN, self.on_right_click)

   def on_right_click(self, event):
      self.PopupMenu(self.menubar, event.GetPosition())


if __name__ == "__main__":
   app = wx.App()

   # Creating a frame
   frame = FrameClass()

   # Show the frame
   frame.Show()

   app.MainLoop()

Output

Explanation

In the above program we create a frame using the menu bar. When you click on the frame a pop-up menu will be displayed. In the menu bar it will have a pop-up menu of fruit items Like "mango", "Litchi", "Apple". When you click or choose any of the items listed in the menu bar it will show you an action as a message containing the fruit item name selected.

Here in the PopUpMenu class we are creating a pop-up menu. In the class it contains a constructor which is used to create a pop-up menu having no menu items. In the class it has different methods named on fruit names. suppose you clicked on items named "Mango" then it will invoke the method named "mango" and this method will print the pop-up message that "You choose mango". Similarly, selection of other menu items will perform the same action by calling their own function.

So, we got to know about how we can create pop-up menu items in wxPython and how we can implement actions after selection of any specified menu item.