Problem Passing Variables As Parameters To Extended Stored Procedure

Hello all,



I have written an XP for SQL Server 2000 SP2. It performs as expected if I call the XP with literal values for the parameters, however when I wrap the XP call into a regular stored procedure, only the first character of each input string is seen by the XP! Here are the relevant code snippets:



C++ Extended Stored Procedure:

(Basically all this code is doing is retrieving the parameters and printing them back out)



srv_paraminfo(srvproc, 1, &bType, &uMaxLen, &uLen, NULL, &bNull);

param1 = new BYTE[uLen + 1];

srv_paraminfo(srvproc, 1, &bType, &uMaxLen, &uLen, param1, &bNull);

param1[uLen] = '';



srv_paraminfo(srvproc, 2, &bType, &uMaxLen, &uLen, NULL, &bNull);

param2 = new BYTE[uLen + 1];

srv_paraminfo(srvproc, 2, &bType, &uMaxLen, &uLen, param2, &bNull);

param2[uLen] = '';



srv_paraminfo(srvproc, 3, &bType, &uMaxLen, &uLen, NULL, &bNull);

param3 = new BYTE[uLen + 1];

srv_paraminfo(srvproc, 3, &bType, &uMaxLen, &uLen, param3, &bNull);

param3[uLen] = '';



sprintf(msgText, "Params received by xp: %s, %s, %s", param1, param2, param3);

srv_sendmsg( srvproc, SRV_MSG_ERROR, 0,(DBTINYINT)0, (DBTINYINT)0,NULL,0,0,msgText,SRV_NULLTERM);

srv_senddone(srvproc, SRV_DONE_ERROR, (DBUSMALLINT)0, (DBINT)0);





Calling the XP with literal values:



EXEC xp_mytest 'one','two','three'



Output:

Params received by xp: one, two, three





Calling XP via a stored procedure:



create procedure sp_mytest

(

@myvar1 nvarchar(200),

@myvar2 nvarchar(50),

@myvar3 nvarchar(50)

)

as BEGIN

PRINT @myvar1

PRINT @myvar2

PRINT @myvar3

EXEC xp_mytest @myvar1, @myvar2, @myvar3

END



EXEC sp_mytest 'one','two','three'



Output:

one

two

three

Params received by xp: o,t,t





Any insight or assistance is greatly appreciated!!!