Tag Archives: wxpython

How to make hello world program in wxPython

In this article we will look at creating a simple hello world program using wxPython. This program will create and display simple window with a big button on it. Up on clicking the button program will exit. Use the following code to create hello world program. You must already have wxPython library installed

Hello world program

Explanation

We will go line by line here and try to explain what’s going on in this program. Most of the lines of self explanatory. If you are just getting started in programming the following explanation will be helpful.

  1. Import wxpython library
  2. Inherit from wx.Frame class. This is useful style for most of the programs that you will build. You can create one base frame or window and put rest of GUI widgets on top of it like Text controls, buttons,images, tables etc.
  3. Instantiate the inherited frame the desired title. parent argument is usually None for main windows.
  4. Create a button with label “Kill Me”. The first argument is parent. In this case we use “self” which is the main window we have just created.
  5. Bind the button click event (EVT_BUTTON) of the killButton to kill method. Whenever, EVT_BUTTON event is fired aka the killButton is clicked, kill method will be called.
  6. This line will cause the window to get displayed on screen. It’s customary to call this method after being done with construction of GUI i.e. create main window, place widgets, bind event like we did here.
  7. Create wxPython application by call wx.App. Every wxPython program must have this application.
  8. Start the main loop. Which will hand over control to wxPython library. This post explains why main loop has to be called.

Output

This program will launch the following window. The button takes all the available space on the window since there are no other widgets. You need a few more lines of code to make the button look like what users are used to – small and horizontal. You can exit the program by clicking the button.

How to install wxpython

In this post we will go over the topic of easy way to install wxpython. The following command will install wxpython easily in python3.

pip install wxpython

Python 2

Older versions of wxpython can be installed by downloading binaries (for windows) from sourceforge . The binaries are available for both Windows and MacOS.

Linux

The pip install command should work on linux also. However, if you are stuck on old linux vesions. You can try installing wxpython using your distro’s package manager like apt-get or yum. You can search for exact version and package name available on your platform using the following commands for debian variants.

apt-cache search wxpython

┌──(kali㉿kali)-[~]
└─$ apt-cache search wxpython
gnumed-client - medical practice management - Client
psychopy - environment for creating psychology stimuli in Python
pyscanfcs - scientific tool for perpendicular line scanning FCS
python3-genx - differential evolution algorithm for fitting
python3-opengl - Python bindings to OpenGL (Python 3)
python3-pyface - traits-capable windowing framework
python3-squaremap - wxPython control to display hierarchic data as nested squares
python3-wxgtk-media4.0 - Python 3 interface to the wxWidgets Cross-platform C++ GUI toolkit (wx.media)
python3-wxgtk-webview4.0 - Python 3 interface to the wxWidgets Cross-platform C++ GUI toolkit (wx.html2)
python3-wxgtk4.0 - Python 3 interface to the wxWidgets Cross-platform C++ GUI toolkit
soundgrain - Graphical interface to control granular sound synthesis modules
wxglade - GUI designer written in Python with wxPython
wxpython-tools - Tools from the wxPython distribution

Successful installation

Use the following command to check if the installation is successful or not.

As shown above it should print current version of wxpython installed if the installation is successful.

A more extensive tutorial is available here