SQLDriverConnect

function SQLDriverConnect(

  ConnectionHandle: SQLHDBC;

  WindowHandle: SQLHWND;

  InConnectionString: PSQLCHAR;

  StringLength1: SQLSMALLINT;

  OutConnectionString: PSQLCHAR;

  BufferLength: SQLSMALLINT;

  var StringLength2: SQLSMALLINT;

  DriverCompletion: SQLUSMALLINT

):SQLRETURN;