Hello, I have a console application that works with command line arguments which I don't have its source code, & I want to create a GUI for it to make it easier. My problem is how to make the GUI application calls the console application & handle its output results to display it in the GUI application with a progressbar or somthing ? Please look at the "X265 Command Line Options" https://x265.readthedocs.org/en/default/cli.html MeGUI is only a GUI app for the cli apps : http://sourceforge.net/p/meguimodproj/code/HEAD/tree/MeGUI Mod/ Help me please