_RetDateStr( ) API Library Routine

Articolo
06/18/2008

Sets the library return value to a date.

void _RetDateStr(char FAR *string)
char FAR *string;            /* Date string. */

Remarks

Specify the date string in mm/dd/year format, in which the year may be either two or four digits.

For more information on how to create an API library and integrate it with Visual FoxPro, see Accessing the Visual FoxPro API.

Example

The following example converts a character string into a date data type and returns it to Visual FoxPro.

Visual FoxPro Code

SET LIBRARY TO RETDATES
? DATES("02/16/95")  && returns date {02/16/95}

C Code

#include <pro_ext.h>

void FAR dates(ParamBlk FAR *parm)
{
   MHANDLE mh;
   char FAR *instring;

   if ((mh = _AllocHand(parm->p[0].val.ev_length + 1)) == 0) 
   {
      _Error(182); // "Insufficient memory"
   }
   _HLock(parm->p[0].val.ev_handle);
   instring = _HandToPtr(parm->p[0].val.ev_handle);
   instring[parm->p[0].val.ev_length] = '\0';
   _RetDateStr(instring);
   _HUnLock(parm->p[0].val.ev_handle);
}

FoxInfo myFoxInfo[] = {
   {"DATES", (FPFI) dates, 1, "C"}
};
FoxTable _FoxTable = {
   (FoxTable FAR *) 0, sizeof(myFoxInfo)/sizeof(FoxInfo), myFoxInfo
};

Condividi tramite

_RetDateStr( ) API Library Routine

Remarks

Example

Visual FoxPro Code

C Code

See Also

Reference

Other Resources

Risorse aggiuntive