Use the Calendar Control 8.0 as a Date Picker Control

The Calendar Control 8.0 (mscal.ocx) shipping with Visual Studio 5.0 looks very nice. It can be very simple incorporate in your application as a date picker control.

It has two combo box to quickly change a month and a year. Unfortunetly, when you try to change the month or the year the date sets on NULL value and doesn't highlighted.

In my example I implement a full date picker control using Calendar Control 8.0. I spend some time to find solution how to work with year's and month's comboboxes and I think it will be usefull to share my experience.

I found that IDs of the Month and the Year comboboxes have the respective values 1 and 2. Then, I trap the message event "NewYear"( "NewYear") and when the combobox obtains focus change the year(month) using NextYear()(NextMonth()) and PreviousYear()(PreviousMonth()) methods.

This is a code for NewYear event:

void CDateCal::OnNewYearDateCalendar() 
{
	// TODO: Add your control notification handler code here
	int nID;

	CWnd* pWnd = GetFocus();
	nID = pWnd->GetDlgCtrlID();	
	CString string;
	pWnd->GetWindowText( string );
	if(2==nID) {//nID =2 - ID combobox Year
		int nDif = atoi(string) - m_nYear;
		if(nDif > 0){	//if increase Year
			while(nDif--)
				OnNextYear();//change year
		}
		else if(nDif < 0){	//if decrease Year
			while(nDif++)
				OnPrevYear();//change Year in a calendar
		}
	}
	
}