프로그램의 Title Style 변경하기

SetWindowLong(hSrcHandle, GWL_STYLE, GetWindowLong(hSrcHandle, GWL_STYLE) and WS_CHILDWINDOW);

참조1 - https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-setwindowlonga

참조2 - https://docs.microsoft.com/ko-kr/windows/win32/winmsg/window-styles