Using QApplication with command line arguments

Question

QApplication::QApplication ( int & argc, char ** argv )

Initializes the window system and constructs an application object

Answer 1

Continue reading that documentation. The set of flags QApplication acts on is listed there.

Try for example:

./qt -style=windows

The arguments that QApplication doesn't deal with are simply left alone. The ones it does process are removed (which is why that function takes non-const arguments).