WDS_IpcSubGroupMulticast()

DWORD DLLCALLCONV WDS_IpcSubGroupMulticast	(	_In_ DWORD	dwRecipientSubGroupID,
		_In_ DWORD	dwMsgID,
		_In_ UINT64	qwMsgData
	)

Sends a message to all processes that registered with the same sub-group ID.

Parameters

[in]	dwRecipientSubGroupID	Recipient sub-group ID that should identify your user application type in case you have several types that may work simultaneously.
[in]	dwMsgID	A 32 bit unique number defined by the user application. This number should be known to all user-applications that work under WinDriver IPC and share the same group ID
[in]	qwMsgData	Optional - 64 bit additional data from the sending user-application

Returns

Returns WD_STATUS_SUCCESS (0) on success, or an appropriate error code otherwise

DWORD ipc_menu_option; /* Can be MENU_IPC_SEND_UID_UNICAST
                                 MENU_IPC_SEND_SUBGROUP_MULTICAST
                                 MENU_IPC_SEND_MULTICAST */
DWORD recipientID = 0x1;
DWORD messageID = 0x64;
UINT64 messageData = 0x32;
DWORD dwStatus;
 
switch (ipc_menu_option)
{
case MENU_IPC_SEND_UID_UNICAST:
    dwStatus = WDS_IpcUidUnicast(recipientID, messageID, messageData);
    break;
 
case MENU_IPC_SEND_SUBGROUP_MULTICAST:
    dwStatus = WDS_IpcSubGroupMulticast(recipientID, messageID,
        messageData);
    break;
 
case MENU_IPC_SEND_MULTICAST:
    dwStatus = WDS_IpcMulticast(messageID, messageData);
    break;
}
 
if (WD_STATUS_SUCCESS != dwStatus)
{
    printf("Failed sending message. Error [0x%lx - %s]\n",
        dwStatus, Stat2Str(dwStatus));
    return;
}
 
printf("Message sent successfully\n");