c++ - Copying DWORD from HKCU to HKLM -

having problem copying registry value hkcu hklm. dword , using code enumerate keys , copy them @ time of install.

hresult hr = s_ok; uint er = error_success; hkey hkey; char szproductkey[max_path], lszvalue[max_path]; tchar    achkey[max_key_length], achclass[max_path] = text(""), achvalue[max_value_name];   dword     cbname, cchclassname = max_path, csubkeys=0, cbmaxsubkey, cchmaxclass, cvalues, cchmaxvalue, cbmaxvaluedata, cbsecuritydescriptor;  filetime ftlastwritetime;     phkey phkresult = null; dword i, retcode, cchvalue = max_value_name,dwtype=reg_sz,dwskeyvaluesize,dwsize=255;  hr = wcainitialize(hinstall, "readtempregkey"); exitonfailure(hr, "failed initialize");  wcalog(logmsg_standard, "initialized.");    orc_reg_sub_lm_cu();  sprintf_s(szproductkey, "software\\m\\%s",orc_get_product_name()); wcalog(logmsg_standard , szproductkey); if( regopenkeyex( hkey_current_user,     szproductkey,     0,     key_read,     &hkey) == error_success     ) {     //get class name , value count.      retcode = regqueryinfokey(         hkey,                    // key handle          achclass,                // buffer class name          &cchclassname,           // size of class string          null,                    // reserved          &csubkeys,               // number of subkeys          &cbmaxsubkey,            // longest subkey size          &cchmaxclass,            // longest class string          &cvalues,                // number of values key          &cchmaxvalue,            // longest value name          &cbmaxvaluedata,         // longest value data          &cbsecuritydescriptor,   // security descriptor          &ftlastwritetime);       // last write time       // enumerate subkeys, until regenumkeyex fails.      if (csubkeys)     {         (i=0; i<csubkeys; i++)          {              cbname = max_key_length;             retcode = regenumkeyex(hkey, i,                 achkey,                  &cbname,                  null,                  null,                  null,                  &ftlastwritetime);          }     }       //enumerate key values.       if (cvalues)      {         (i=0, retcode=error_success; i<cvalues; i++)          {              cchvalue = max_value_name;              achvalue[0] = '\0';              retcode = regenumvalue(hkey, i,                  achvalue,                  &cchvalue,                  null,                  null,                 null,                 null);              if (retcode == error_success )              {                  dword dwsize = sizeof(lszvalue);                 retcode = regqueryvalueex(hkey, achvalue, null, &dwtype,(lpbyte)&lszvalue, &dwsize);                 if (retcode == error_success)                 {                      orc_reg_stop_lm_cu();                     dwskeyvaluesize = strlen((char*) lszvalue);                     orc_regvalue(hkey_local_machine,                         "software\\m\\orchestrator",                          key_set_value,                         achvalue,                          &dwtype,                         (unsigned char *)lszvalue,                         &dwskeyvaluesize);                  }             }         }      } } 

after copy value registry correct data says invalid dword 32-bit value know cause this?

thanks

you invalid dword 32-bit value message because last parameter passed orc_regvalue() incorrect. correct value reg_dword data type sizeof(dword).

try passing dwsize instead of dwskeyvaluesize

                orc_regvalue(hkey_local_machine,                     "software\\m\\orchestrator",                      key_set_value,                     achvalue,                      &dwtype,                     (unsigned char *)lszvalue,                     &dwsize); 

alternatively can try

   dwskeyvaluesize = dwsize; 

instead of

   dwskeyvaluesize = strlen((char*) lszvalue);