Sets the library return value to a datetime.


void _RetDateTimeStr(char FAR string) char FAR string; /* Datetime string. */

Remarks

Specify the datetime string in mm/dd/year hh:mm:ss format, in which the year may be either two or four digits. See CTOT( ) Function for a list of valid datetime formats for the datetime string.

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 date type value to datetime type value.

Visual FoxPro Code

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SET LIBRARY TO RETDT ? xctot("2/16/95 12:07am")

C Code

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#include <pro_ext.h> void FAR datetime(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'; _RetDateTimeStr(instring); _HUnLock(parm->p[0].val.ev_handle); } FoxInfo myFoxInfo[] = { {"XCTOT", (FPFI) datetime, 1, "C"} }; FoxTable _FoxTable = { (FoxTable FAR *) 0, sizeof(myFoxInfo)/sizeof(FoxInfo), myFoxInfo };

Copy Code

#include <pro_ext.h>
void FAR datetime(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';
   _RetDateTimeStr(instring);
   _HUnLock(parm->p[0].val.ev_handle);
}
FoxInfo myFoxInfo[] = {
   {"XCTOT", (FPFI) datetime, 1, "C"}
};
FoxTable _FoxTable = {
   (FoxTable FAR *) 0, sizeof(myFoxInfo)/sizeof(FoxInfo), myFoxInfo
};

Remarks

Example

Visual FoxPro Code

C Code

See Also

Reference

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