Getting and Setting Information for Help Resources
you can set help resources for menus, dialog boxes, or windows of your
application that do not currently have help resources associated with
them. You can also supplement the 'hmnu' and 'hdlg' resources
currently associated with the menus and dialog boxes of your
function.
of the 'hdlg' resource that will be used by the next dialog box as a
'hdlg' resource currently in use has not been overridden by a call to
result code of resNotFound.
functions when displaying nested dialog boxes. For example, you can
save the 'hdlg' resource of the current dialog box, set a new 'hdlg'
resource, display the new dialog box, and then restore the setting of the
previous 'hdlg' resource when you close the second dialog box.