C++ (Cpp) CRegExp::GetSubLenght示例

void CGUIDialogKeyboard::OnIPAddress()
{
  // find any IP address in the current string if there is any
  // We match to #.#.#.#
  CStdString utf8String;
  g_charsetConverter.wToUTF8(m_strEdit, utf8String);
  CStdString ip;
  CRegExp reg;
  reg.RegComp("[0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+");
  int start = reg.RegFind(utf8String.c_str());
  int length = 0;
  if (start > -1)
  {
    length = reg.GetSubLenght(0);
    ip = utf8String.Mid(start, length);
  }
  else
    start = utf8String.size();
  if (CGUIDialogNumeric::ShowAndGetIPAddress(ip, m_strHeading))
  {
    utf8String = utf8String.Left(start) + ip + utf8String.Mid(start + length);
    g_charsetConverter.utf8ToW(utf8String, m_strEdit);
    UpdateLabel();
  }
}