View source for HM EXT HELP UNDEFINED

{{DISPLAYTITLE:HM_EXT_HELP_UNDEFINED}}
This message is sent to the application by the Help Manager to notify it that
an extended help window has not been defined.

==Syntax==
<pre>
param1
ULONG ulReserved; /* Reserved value, should be 0. */

param2
ULONG ulReserved; /* Reserved value, should be 0. */
</pre>

==Parameters==
;ulReserved ([[ULONG]]) - input: Reserved value, should be 0.
;ulReserved ([[ULONG]]) - input: Reserved value, should be 0.

==Returns==
;ulReserved ([[ULONG]]) - return: Reserved value, should be 0.

==Remarks==
When the extended help window is requested, the Help Manager searches the
help table for its identity. If the extended help window identity associated
with the current active window is zero, the Help Manager sends this message to the
application to notify it that an extended help window has not been defined. The
application then can:
* Ignore the request for help and not display a help window.
* Display its own window.
* Use the [[HM_DISPLAY_HELP]] message to tell the Help Manager to display a particular window.

==Default Processing==
None.

[[Category:Messages]]