Tests/Wrapping/vtkTestMoc.h - third_party/github.com/Kitware/CMake - Git at Google

 #include <qapplication.h>

 class Foo : public QApplication
 {
   Q_OBJECT
 public:
   Foo();
 };
	#include <qapplication.h>

	class Foo : public QApplication
	{
	Q_OBJECT
	public:
	Foo();
	};