Using Object Identifiers

Other versions of this page are also available for the following:

• Windows Embedded CE 6.0 R3

8/28/2008

The following code example shows how to retrieve data from the object store or mounted volume by using the Windows Embedded CE object identifier. For more information, see Objects and Object Identifiers.

void UsingCeOidGetInfo (void)
{
   CEOID CeOid;  // Object identifier.
   PCEGUID pceguid; // GUID of the mounted volume.
   CEOIDINFO CeObjectInfo; // Structure that will store retrieved data.
   // Object data
   TCHAR szMsg[200]; // String to use with object data
   // Assign to pceguid the CEGUID of the mounted volume on which the object resides.
   // Assign to CeOid the object identifier of the object about which you want to get data.
   CEGUID guid;
   pceguid = &guid;
   if (CeOidGetInfoEx (pceguid, CeOid, &CeObjectInfo))
   {
      switch (CeObjectInfo.wObjType)
      {
         case OBJTYPE_FILE: wsprintf (szMsg, TEXT("Object is a file: %s"), CeObjectInfo.infFile.szFileName);
         break;
         case OBJTYPE_DIRECTORY: wsprintf (szMsg, TEXT("Object is a directory: %s"), CeObjectInfo.infDirectory.szDirName);
         break;
         case OBJTYPE_DATABASE: wsprintf (szMsg, TEXT("Object is a database: %s"), CeObjectInfo.infDatabase.szDbaseName);
         break;
         case OBJTYPE_RECORD: wsprintf (szMsg, TEXT("Object is a record"));
         break;
         case OBJTYPE_INVALID: wsprintf (szMsg,
            TEXT("The object store does not contain a valid ")
            TEXT("object that has this object identifier."));
         break;
         default: wsprintf (szMsg, TEXT("Object is of unknown OBJTYPE"));
         break;
      }
   }
   else
   {
      // Your error-handling code goes here.
      if (GetLastError () == ERROR_INVALID_HANDLE)
         wsprintf (szMsg, TEXT("Invalid Object ID"));
      else
         wsprintf (szMsg, TEXT("Unknown error"));
   }
}

See Also

Concepts

Object Store