================================= ================================= ================================= 출처: blog.naver.com/picbuddy/80107712981 void CMsgTestDlg::OnButton1() { m_strCall = ""; m_strCall += "SendMessage호출전\r\n"; UpdateData(FALSE); SendMessage(UM_MSG_SEND, NULL, NULL); m_strCall += "SendMessage호출후\r\n"; UpdateData(FALSE); } void CMsgTestDlg::OnButton2() { m_strCall = ""; m_strCall +=..