thankyou bram On 4/4/07, Bram Kuijvenhoven <[EMAIL PROTECTED]> wrote:
dayat wrote: > yes vincent, that's my intention. forgive I make friends become to > confuse. sorry, my english so poor. Thank you for your reply. > On 4/3/07, *Vincent Snijders* < [EMAIL PROTECTED] > I understood the question in a different way. > > To use an ODBC connection you need a DSN. Well, actually you need a connection string. A connection string can specify a DSN, a File DSN and/or a set of connection parameters. This implies that you do not specifically need a DSN in order to connect an ODBC datasource. In fact DSNs are just shortcuts to sets of parameter values. > How can I create a DSN from my program? > > How can I delete the DSN from the system after the program has done > its job, just > before exiting? The ODBC API, as documented at http://msdn.microsoft.com/library/default.asp?url=/library/en-us/odbc/htm/dasdkodbcoverview.asp, describes four APIs: - ODBC API - Setup API - Installer API - Translation API An ODBC enabled application does not use all these APIs directly, but of course it will use the ODBC API, and if it wishes to manipulate the system ODBC config, it uses the Setup API. The Setup API contains a ConfigDSN function for adding/removing/changing DSNs. So you can manage DSNs from your application. However, as far as I know FPC currently only contains the ODBC API, not the Setup API. So you'd have to add it. Note: there are only three functions in it, and some of the constants are already defined in the odbcsql unit. If your only goal is to connect to an ODBC data source, I recommend to use a connection string, which is formed from the properties of TODBCConnection (in particular Params). Regards, Bram _________________________________________________________________ To unsubscribe: mail [EMAIL PROTECTED] with "unsubscribe" as the Subject archives at http://www.lazarus.freepascal.org/mailarchives
