How to invoke the exported function of odbc32.dll

Question

Hi,
I am unable to find the dll (SQLAllocHandle.dll) in our system. Its mentioned that the ‘SQLAllocHandle’ is one of the exported function of odbc32.dll
I want to find out how to invoke this exported function and make use of the same in our system?
Regards,
Jay

Answer 1

Your question leads me to believe you're not sure what you're asking.
SQLAllocHandle is an ODBC api call, and you use it in your ODBC API program, the same way you use other ODBC api calls.
Here's an example of a simple ODBC API program that uses SQLAllocHandle.
Hope it helps,
Greg
#include "windows.h"
#include "stdio.h"
#include "sql.h"
#include "sqlext.h"
void GetSQLError();
#define checkforerrors if (rc!=SQL_SUCCESS){GetSQLError();exit(1);}
static      HENV     henv;
static      HDBC     hdbc;
void main(int argc, char *argv[])
     SQLRETURN rc=0;
     SQLCHAR* uid="SCOTT";
     SQLCHAR* pwd="tiger";
     SQLCHAR* dsn="orcl32";
     rc = SQLAllocHandle(SQL_HANDLE_ENV,SQL_NULL_HANDLE,&henv);checkforerrors
     rc = SQLSetEnvAttr(henv,  SQL_ATTR_ODBC_VERSION,(SQLPOINTER)SQL_OV_ODBC3,0);checkforerrors
     rc = SQLAllocHandle(SQL_HANDLE_DBC, henv, &hdbc);checkforerrors
     rc = SQLConnect(hdbc, dsn, (SWORD)strlen(dsn), uid,(SWORD)strlen(uid),pwd,(SWORD)strlen(pwd));checkforerrors
     printf("connected\n");
     rc = SQLDisconnect(hdbc);checkforerrors
     rc = SQLFreeConnect(hdbc);checkforerrors
     rc = SQLFreeEnv(henv);checkforerrors
void GetSQLError()
long    llDbErrCd = 0;
short   llRetMsgLen = 0;
char    lszSqlErrMsg[255];
char    lszSqlMsg[255];
SQLError(henv,hdbc,0,(SQLCHAR*) lszSqlErrMsg,&llDbErrCd,(SQLCHAR*) lszSqlMsg,255,&llRetMsgLen);
printf(lszSqlErrMsg);
printf(lszSqlMsg);
}