View source for HM QUERY DDF DATA

{{DISPLAYTITLE:HM_QUERY_DDF_DATA}}
This message is sent to the communication object window by IPF when it encounters the dynamic data formatting (:ddf:) tag.

==Syntax==
<pre>
param1
HWND pageclienthwnd; /* Client handle. */

param2
ULONG resid;        /* The res ID associated with the DDF tag. */
</pre>

==Parameters==
;pageclienthwnd ([[HWND]]) - input: Client handle.
:The client handle of the page that contains the object communication window.
;resid ([[ULONG]]) - input: The res ID associated with the DDF tag.

==Returns==
;rc ([[HDDF]]) - return: Return code.
::0: An error has occurred in the application's DDF processing.
::Other: The DDF handle to be displayed.
::'''Note''': Once this handle has been returned, the HDDF handle can no longer be used by the application.

==Remarks==
Upon receiving this message, the communication object calls DdfInitialize to indicate the start of dynamic data formatting (DDF). Any combination of other DDF calls are then made to describe this data. When this is complete, the communication object finishes processing this message, indicating that the DDF data is complete. After that time, the DDF handle received from DdfInitialize is considered
invalid.

==Default Processing==
None.

[[Category:Messages]]