mfc

class AFX_EXT_CLASS  button : public CDialog{	DECLARE_DYNAMIC(button)public:	button(CWnd* pParent = NULL);   // standard constructor	virtual ~button();// Dialog Data//	enum { IDD = IDD_CONTROL_DIALOG };protected:	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support	DECLARE_MESSAGE_MAP()};//cpp fileIMPLEMENT_DYNAMIC(button, CDialog)button::button(CWnd* pParent /*=NULL*/)	: CDialog(1, pParent){}button::~button(){}void button::DoDataExchange(CDataExchange* pDX){	CDialog::DoDataExchange(pDX);}BEGIN_MESSAGE_MAP(button, CDialog)END_MESSAGE_MAP()