How to convert Cstring to ColeDateTimeSpan ?

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COleDateTimeSpan dtOleDuration;
CString m_sDuration;

here iam having two variables which is of different types now i want convert CString to ColeDateTimeSpan

this duration is between startdate and enddate of a batch / node

Posted 25-Feb-15 4:32am

Vamsi Krishna

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Jochen Arndt 25-Feb-15 10:39am

This depends on the format of the string (you should add an example to your question). The solution is simple if it is already a time span in the format [h]hh:mm:ss.

But if the time span consists of two date time strings it can be difficult. Then you have to split the string into the two parts and convert them to COleDateTime which can then be used to calculate the time span. This conversion depends on the used format and may fail if different formats are used.

Vamsi Krishna 26-Feb-15 1:43am

COleDateTimeSpan dtOleDuration;
CString m_sDuration;

m_sDuration= 36:22;
dtOleDuration=..............???????

How to convert this to Duration..........

write now iam calculating it by getting the difference between start date and end date like this

COleDateTime m_dtStopDate,m_dtStDate;

m_dtStDate.ParseDateTime(m_sStDate);
m_dtStopDate.ParseDateTime(m_sEndDate);

dtOleDuration=m_dtStopDate-m_dtStDate;

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Richard MacCutchan · Answer 1 · 2015-02-25T04:36:00

Solution 1

You need to convert the string to an integer and use that integer to set the ColeDateTimeSpan variable, according to its definition.

Posted 25-Feb-15 4:36am

Richard MacCutchan

Jochen Arndt · Answer 2 · 2015-02-25T21:43:00

According to the above comments you seem to have a time span string in the format hh:mm:ss. Then you can perform the conversion like this:

// Convert time span string to COleDateTimeSpan
// Format must be [[hh:]mm:]ss[.msec]
COleDateTimeSpan SpanFromString(const CString& strSpan) const
{
	long lDays = 0;
	long lHours = 0;
	int nMins = 0;
	int nSecs = 0;
	LPCTSTR s1 = strSpan.GetString();
	LPCTSTR s2 = _tcschr(s1, _T(':'));
	LPCTSTR s3 = s2 ? _tcschr(s2 + 1, _T(':')) : NULL;
	// hh:mm:ss
	if (s3)
	{
		nSecs = _tstoi(s3 + 1);
		nMins = _tstoi(s2 + 1);
		lHours = _tstol(s1);
	}
	// mm:ss
	else if (s2)
	{
		nSecs = _tstoi(s2 + 1);
		nMins = _tstoi(s1);
	}
	// ss or empty string
	else
		nSecs = _tstoi(s1);
	if (lHours >= 24)
	{
		lDays = lHours / 24;
		lHours %= 24;
	}
	return COleDateTimeSpan(lDays, (int)lHours, nMins, nSecs);
}