winAPI 윈도우에 값 쓰거나 읽기

1. 함수를 이용하기

GetWindowText(hWnd,tmp1,4);

SetWindowText( HWND hWnd,l LPCTSTR lpString)

2. 메시지 보내기

SendMessage(hWnd,WM_GETTEXT,len+1,(LPARAM)Caption);

SendMessage(swapA,WM_SETTEXT,0,(LPARAM)tmp2);