Problem:
Running a Dialog System application with a Calendar control the following error may occur:
OLE returned an error H"800401F3", invalid class string.
Resolution:
This error indicates that the ActiveX control has not been registered in the operating system.
Iit would appear that the Calendar control is supplied as part of Microsoft Office (MSCAL.OCX). You will need to have installed Office on the machine.
For more information see:
http://support.microsoft.com/default.aspx?scid=kb;en-us;279098
Old KB# 5802
