These functions decode/encode state to string. You can save this sting to INI or registry for each user.  see: WritePrivateProfileString("CommandBars", "State", str, strPath);

void LoadStateFromString(CXTPCommandBars* pCommandBars, CString str, BOOL bSerializeControls)
{
 int nLen = str.GetLength();
 if ((nLen == 0) || (nLen % 2 != 0) )
  return; 
 
 int nBytes = nLen/2;
 BYTE* pData = new BYTE[nBytes];

 for (int i = 0; i < nLen; i += 2)
 {
  (pData)[i/2] = (BYTE)
   (((str[i+1] - 'A') << 4) + (str - 'A'));
 }

 CMemFile memFile(pData, nBytes);
 CArchive ar (&memFile,CArchive::load);
 
 try
 { 
  pCommandBars->SerializeBarState(ar, bSerializeControls);
 }
 catch (COleException* pEx)
 {
  pEx->Delete ();
 }
 catch (CArchiveException* pEx)
 {
  pEx->Delete ();
 }

 delete[] pData;

}

CString SaveStateToString(CXTPCommandBars* pCommandBars, BOOL bSerializeControls)
{
 CMemFile memFile;
 CArchive ar (&memFile,CArchive::store);

 try
 {
  pCommandBars->SerializeBarState(ar, bSerializeControls);
 }
 catch (COleException* pEx)
 {
  pEx->Delete ();
 }
 catch (CArchiveException* pEx)
 {
  pEx->Delete ();
 }
 
 ar.Flush();

 DWORD nBytes = (DWORD)memFile.GetPosition();
 BYTE* pData = memFile.Detach();

 CString str;
 LPTSTR lpsz = str.GetBufferSetLength(nBytes * 2);
 
 // convert to string and write out
 for (UINT i = 0; i < nBytes; i++)
 {
  lpsz[i*2] = (TCHAR)((pData & 0x0F) + 'A'); //low nibble
  lpsz[i*2+1] = (TCHAR)(((pData >> 4) & 0x0F) + 'A'); //high nibble
 }
 
 ar.Close();
 memFile.Close();
 free(pData);