// in h1.h file
struct H1 : public WithTest2Layout<TopWindow> {
public:
	typedef H1 CLASSNAME;
	H1();
	void AddNum(int a, int b){
		if(a>=b) 
			t1<<="1 OK";	
	}

        void AddNum2(int a, int b);
	void Set_t1(String a) {t1<<=a;}
};


// in h2.h file

#include "h1.h"

// it is now valid to call Set_t1 as AddNum2 is now also in the 
// same class scope.

void H1::AddNum2(int a, int b){
	if ( a > b )
//		t1<<="2 OK";
		Set_t1("2 OK");	

}