With this free program you will be finally able to generate QR codes on your own and decode them from images or unopened files from your computer, onto your computer. Using it, you can select any QR code that is displayed on your PC's screen and read its content.
You can also choose an image file that contains a QR code and the program will read it for you. You can even use your webcam to capture and decode a QR Code. CodeTwo QR Code Desktop Reader & Generator is really simple and contains no spare options.