delphi - Why do my registry writes report no error but have no effect? -


I am trying to create a new system DSN entry when my service is installed, by typing the registry through the Had tried to. Openky and Trajestery WrightString, but no value is being written. Of the three keys I am writing, I work fine. 

  const sODBCRegKeyLoc = '\ software \ oDBC \ oDBCIII \ obdc data source'; SServerRegKeyLoc = '\ SOFTWARE \ ODBC \ ODBC.INI \ DSN Name'; RInstall: = TRegistry.Create (KEY_READ or KEY_WRITE); Try rInstall.RootKey: = HKEY_LOCAL_MACHINE; If rInstall.OpenKey (sRegKeyLoc, True) then Rinstall Write string ('Description', 'Monitors for new log entries.') Allows modification; RInstall.CloseKey; End; // This call works fine if rInstall.OpenKey (sODBCRegKeyLoc, True) then RINTL Arct string ('DSN name', 'SQL Native Client') starts; End; // If this call fails with an error message, then rInstall.OpenKey (sServerRegKeyLoc, True) then Aristoteles Start the right string ('driver', 'c: \ windows \ system32 \ sqlncli.dll'); RInstall.WriteString ('server', 'serverIP \ SQLEXPRESS'); rInstall.WriteString ('database', 'database name'); End; // This call fails with any error message RISTOL in the end. free; End; // Write the value for the registry.   
 Any help would be appreciated.   
 
 
 The following possible failure methods come to mind:  
     
  1.  Your process There is no clear and even virtualized. Writes the successful but virtual data store in the land.  
  2.  There is a manifest in your process but the process not exceeded is not virtualized. Attempting to open the key to write under  HKLM  fails, but your code fails that error Fails to report  
  3.  The process is 32 bit and therefore access is redirected to the 32 bit view of the registry. Writes successful, but the data under the code under the  HKLM \ Software \ Wow6432Node  32 code.   
     To avoid virtualization, you will need an app manifest. You must use the  Required Administrator  setting for the  requested execution level . Use  
      KEY_WOW64_64KEY  to specify access to 64 bit view from your 32 bit program

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