how to convert CString to Variant???

ive found so many examples on how to convert a variant to a cstring but none on the reverse?

basically, i GetWindowText from a text box in the form of a CString and want to use that value as a REFERENCE_TIME which is of type LongLong.

this is what i have:

////////////////////////////////////////

CString s;
VARIANT v;
e_Start.GetWindowText(s);

//conversion code goes here

e_pVEdit->SetStartTime(v.llVal);
}

////////////////////////////////////////

e_Start is the text box of course, and e_pVEdit is a class object with the method SetStartTime which takes a REFERENCE_TIME argument which is essentially a LongLong value.

i just can't figure out how to turn s into v?????

I think you need to convert from CString to BSTR first.

Maybe something like:

CString csMyString = _T("TEST");
bstr_t bstrString = csMyString.AllocSysString();

_variant_t vString;
vString.vt = VT_BSTR;
vString.BSTR = bstrString;

Not tested. But maybe something like above??

Mike B

Why change it to BSTR first? what next?

If my understanding is right, maybe something like this.

v.llval = atoi64((LPSTCTR)s);

:)

neight of your replies worked, unless there is something terribly wrong with me

CString s;
VARIANT v;
e_End.GetWindowText(s);
v.vt = VT_BSTR;
v.bstrVal = s.AllocSysString();

this only set the bstrVal correctly, cuz when i check the v.llVal, it is always 0???

What data type is llVal. I don't even see that in the VARIANT list.

Mike B

sorry, I should have read it more clearly:

Quote:

---

basically, i GetWindowText from a text box in the form of a CString and want to use that value as a REFERENCE_TIME which is of type LongLong.

---

How would you get a type "LongLong" from a CString anyhow? Can you not use COleDateTime or something?

COleDateTime date;
if(date.ParseDateTime(dateString))
{
_variant_t vDate;
vDate.vt = VT_DATE;
vDate.Date = date;
}

This maybe way off what you want, but I am not sure what REFERENCE_TIME is, or what you are actually trying to do?

Mike B

i got it, maybe not the best way, but it works

here is my solution:

//////////////////////////////////////////

CString s;
e_End.GetWindowText(s);

int t;
sscanf(s,"%d",&t);
.
.
//yadda yadda
.
.
e_pVEdit->SetEndTime((REFERENCE_TIME &)t);

//////////////////////////////////////////

that works good enough for me :)
thanks for the help though

If the CString is a number representing time, could you not do something like:

CString s;
e_Start.GetWindowText(s);

double dValue = atof(s);
e_pVEdit->SetStartTime((LONGLONG)(dValue * 10000000););