这个SQLBindParameter()哪里错了

[zhsl12]

char *strName = "DF",char *strPassword = "DF";

SQLBindParameter(_hstmt,1,SQL_PARAM_INPUT,SQL_CHAR,SQL_CHAR,15,15,strName,15,&length);
SQLBindParameter(_hstmt,2,SQL_PARAM_INPUT,SQL_CHAR,SQL_CHAR,15,15,strPassword,15,&length);
_retcode =SQLExecDirect(_hstmt,(SQLCHAR*)("{call InsertLogin1(?,?}"),SQL_NTS);

[zhsl12]

CREATE PROCEDURE InsertLogin1
@UserName char(15),
@Password char(15)
AS
if exists(SELECT * from Password where Name=@UserName)
return 1
insert Password(Name,Password)Values(@UserName,@Password)
GO

[fcuandy]

c++里调用存储过程时,给过程或语句中参数赋值时原型是:
SQLRETURN SQLBindParameter(
SQLHSTMTStatementHandle,
SQLUSMALLINTParameterNumber,
SQLSMALLINTInputOutputType,
SQLSMALLINTValueType,
SQLSMALLINTParameterType,
SQLUINTEGERColumnSize,
SQLSMALLINTDecimalDigits,
SQLPOINTERParameterValuePtr,
SQLINTEGERBufferLength,
SQLINTEGER *StrLen_or_IndPtr);


ValueType

[Input]
The C data type of the parameter.

这里应该是c/c++变量类型吧，不应该是SQL_CHAR.
乱说的，错了别见怪。

[zhsl12]

试过 没作用 SQL_C_CHAR