HM_SET_OBJCOM_WINDOW

This message is sent to IPF by the application to identify the communication object window to which the HM_INFORM and HM_QUERY_DDF_DATA messages will be sent. This message is not necessary if the communication object does not expect to receive either of these messages.

Syntax

hwndparam1
HWND objcomhwnd; /* Handle of the communication object window to be set. */

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

Parameters

objcomhwnd (HWND) - input

Handle of the communication object window to be set.

ulReserved (ULONG) - input

Reserved value, should be 0.

Returns

hwndprevioushwnd (HWND) - return

The handle of the previous communication object window.

Remarks

HM_INFORM and HM_QUERY_DDF_DATA messages which are not processed must be passed to the previous communication object window which was returned when 'HM_SET_OBJECT_WINDOW' was sent.

Default Processing

None.