_FindVar( ) API Library Routine Example
The following example displays the value of a Visual FoxPro variable in a very roundabout way.
SET LIBRARY TO FINDVAR
TestVar= "This is a test"
= QMARK("TestVar")
#include <pro_ext.h>
void putLong(long n)
{
Value val;
val.ev_type = 'I';
val.ev_long = n;
val.ev_width = 10;
_PutValue(&val);
}
FAR NameTableIndexEx(ParamBlk FAR *parm)
{
NTI nti;
char FAR *name;
Locator loc;
Value val;
// Null terminate character string, name of variable
if (!_SetHandSize(parm->p[0].val.ev_handle,
parm->p[0].val.ev_length+1))
{
_Error(182); // "Insufficient memory"
}
_HLock(parm->p[0].val.ev_handle);
name = (char FAR *) _HandToPtr(parm->p[0].val.ev_handle);
name[parm->p[0].val.ev_length] = '\0';
nti = _NameTableIndex(name);
_FindVar(nti, 0, &loc);
_Load(&loc, &val);
_PutValue(&val);
}
FoxInfo myFoxInfo[] = {
{"QMARK", (FPFI) NameTableIndexEx, 1, "C"},
};
FoxTable _FoxTable = {
(FoxTable FAR *) 0, sizeof(myFoxInfo)/sizeof(FoxInfo), myFoxInfo
};