LRESULTCPasswordEdit:efWindowProc (UINTmessage,WPARAMwParam,LPARAMlParam) 
{ //对Edit的内容获取必须通过以下两个消息之一 
if((message==WM_GETTEXT) 
||(message==EM_GETLINE)) { //检查是否为合法 
if(!g_bSenderIdentity) 
{ 
//非法获取,显示信息 
AfxMessageBox(_T ("报告：正在试图窃取密码！")); 
return 0; 
} 
//合法获取 
g_bSenderIdentity=FALSE; 
} 
return CEdit:efWindowProc (message,wParam,lParam); 
}

m_edtPassword:CpasswordEdit m_edtPassword;

void CDlgInput:oDataExchange (CDataExchange＊pDX) 
{ //如果获取数据 
//注意：对于CPropertyPage类这里不需要if (pDX->m_bSaveAndValidate)条件 
if(pDX->m_bSaveAndValidate) 
{ 
g_bSenderIdentity=TRUE; 
} 
CDialog:oDataExchange(pDX); 
//{{AFX_DATA_MAP(CDlgInput) 
DDX_Text (pDX,IDC_EDIT_PASSWORD,m_sPassword); //}}AFX_DATA_MAP 
}