The help ID to be passed to the help system whenever the end user requests help for the dialog or dialog element that has the focus by pressing F1. In most help systems, this help ID is referred to as topic number.

If the dialog or dialog element with the focus does not provide a HELP-ID, the HELP-ID of its parent is taken.

Applies to	ActiveX control, bitmap control, canvas control, column specification control, context menu, date/time picker control, dialog (all types), dialog bar control, edit area control, input field control, list box control, list view control, menu bar, OLE container control, push button control, radio button control, scroll bar control, selection box control, slider control, spin control, submenu control, tab control, table control, toggle button control, tree view control.
Data Type	I4
Default Value	0
Possible Values	0 or any other integer value