A quick fix to make the code window showing up in Visual Studio 2012 - Reset Window Layout

Problem:

Kind of weird, when I open a solution in VS2012 today, I cannot see the code window anymore. Double-click the program file, right-click to view code, from the View menu, from the code menu icon...All of them CANNOT bring the code window tup. I simply cannot see the code!

Solution:

The last resort - Reset Window Layout from the Window menu. It works!