Difference between revisions of "Retclen()"

Latest revision as of 08:59, 11 April 2013

PURPOSE

Return a character string

SYNONYM

api_ret_clen()

SYNOPSIS

#include "lianja_api.h"
 
int	_retclen(string, len)
 
<input parameters>
char	*string;		/*Address of a buffer containing a character string 	*/
int	len;			/* Length of string						*/
 
<output parameters>
none

DESCRIPTION

The _retclen() function is used to pass a character pointer back to your application. The second parameter, len, is used to specify the length of the character string returned. The maximum length of a string that can be returned is 64kB. If the string is too long, an error message will be returned.

EXAMPLE

The following example evaluates the first parameter passed and returns the English translation of the logical condition with a length of 5 characters.

Example Lianja script:

m_word=ltow(.T.)

Example 'C' function:

#include "lianja_api.h"
 
lianjaapi_ltow()
{
    char	strbuff[6];
 
    if (_parinfo(1) == API_LTYPE) {
       if ( _parl(1) == 0 ) {
       strcpy( strbuff, "False" );
       } else {
       strcpy( strbuff, "True" );
       }
    }else {
       strcpy(strbuff, "");
    }
 
    _retclen(strbuff, 5);
}

SEE ALSO

_parc(), _parclen(), _parcsiz(), _parinfo(), _retc(), ISCHAR(), CHAR_ALLTRIM(), CHAR_LOWER(), CHAR_LPAD(), CHAR_LTRIM(), CHAR_RPAD(), CHAR_RTRIM(), CHAR_STR(), CHAR_UPPER(), DATE_STOD()