C / C++ / MFC

--- foo.h
class foo
{
static int& s_a();
int m_var;
foo(){m_var=s_a();}
}
--- foo.cpp
#include "foo.h"
int& foo::s_a()
{
  static int s_a_var=1;
  return s_a_var;
}

--- my_prog.cpp
#include "foo.h"
foo global_foo;
mian{}

...<br />
class foo<br />
{<br />
 static bool s_initialize;<br />
 static int s_a;<br />
 int m_var;<br />
 foo()<br />
 {<br />
  if (!s_initialized)<br />
  {<br />
     s_a = 1;<br />
     s_initialized = true;<br />
  }<br />
  m_var=s_a;<br />
}<br />
...<br />
int foo::s_initialized = false;<br />
int foo::s_a=1;<br />
...

class foo<br />
{<br />
	static bool s_initialized;<br />
	static int s_a;<br />
	int m_var;<br />
	foo()<br />
	{<br />
		if (!s_initialized)<br />
		{<br />
			s_a = 1;<br />
			s_initialized = true;<br />
		}	<br />
		m_var=s_a;<br />
	}<br />
};<br />
bool foo::s_initialized;<br />
int foo::s_a=0;

VERIFY (AnimateWindow (GetSafeHwnd(), 10, AW_BLEND));