DXmHelpOnContext - Enters the application into context sensitive help mode and either calls a help callback (if one exists) or searches for one in the widget's parent.
The identifier of the widget (widget ID) to pass to the
A Boolean value passed to
When True, confines the help cursor (?) to the widget specified in the
The DXmHelpOnContext routine enters context sensitive help mode, changing the cursor to the help cursor (?) and then waiting for an MB1 click on a widget. If the selected widget has a help callback, that help callback is called; otherwise, the widget's parent is checked for a help callback.
Note that a Null callback structure pointer is passed to the help callback.
Therefore, help callbacks in your application should test the value of this
pointer before they attempt to use it.