링크 모음 자료실 ^^

1. 플래쉬 -> 윈도우프로그램
    fscommand( "...", true ); 커멘드 호출

2. 윈도우프로그램 -> 플래쉬
 m_flash.CallFunction( "<invoke name='external_func'><arguments><string>arg</string></arguments></invoke>" );

2번을 하실때는 플래쉬 액션에
flash.external.ExternalInterface.addCallback( "external_func", this, flash_func );
function flash_func(v:Number)

{

...
}

typedef BOOL (WINAPI *CHANGEWINDOWMESSAGEFILTER)(
UINT message,
DWORD dwFlag
);

선언하시구요 

 HANDLE popapi;
 CHANGEWINDOWMESSAGEFILTER ChangeWindowMessageFilter;

 popapi = LoadLibrary("USER32.DLL");

 ChangeWindowMessageFilter = (CHANGEWINDOWMESSAGEFILTER)GetProcAddress((HINSTANCE)popapi,
  "ChangeWindowMessageFilter");
 ChangeWindowMessageFilter(WM_COPYDATA, 1);

 초기화 init 부분에 넣으시면 끝