If you use typically sized strings for event subjects, it essential that the use can view these via a tooltip for events represented by smaller blocks. However the calendar control does not show these (in day view) for any events that are one day or longer. These single/multiday events are put into the top section of the view and are usually relatively small blocks, so it seems even more important the subject can be viewed in a tooltip. They do show up in the week and monthly views, so this seems inconsistent. It also inconstant with the Outlook day view.

The following code appears in CXTPCalendarViewEvent::OnMouseMove ....

else if (hitInfo.uHitCode & xtpCalendarHitTestEventTextArea)

{

      bHideTooltip = !!(nFlags & MK_LBUTTON);

      BOOL bShow = !IsMultidayEvent() || XTP_SAFE_GET2(pView, GetResources(), GetCount(), 0) > 1;

      if (bShow && bIsNoDragging && !IsEditingSubject() && !pView->IsEditingSubject() &&

            !IsShowingToolTip() && !(nFlags&MK_LBUTTON) && m_bTextOutOfBorders)

      {

            if (m_nTimerID_ShowToolTip == 0)

            {

                  UINT uTimeOut_ms = GetShowToolTipTimeOut();

                  m_nTimerID_ShowToolTip = SetTimer(uTimeOut_ms);

                  ASSERT(m_nTimerID_ShowToolTip);

                  DBG_TRACE_TIMER(......);

            }

      }

}

The highlighted line stops the tooltip from appearing on any single/multiday event. I do not know what this test is trying to achieve, but it looks suspiciously like a bug to me.

Thanks for your help