SOURCE_GROUP_ENTRY structure (mgm.h)

The SOURCE_GROUP_ENTRY structure describes the entry returned by the group enumeration function MgmGroupEnumerationGetNext.

Syntax

typedef struct _SOURCE_GROUP_ENTRY {
  DWORD dwSourceAddr;
  DWORD dwSourceMask;
  DWORD dwGroupAddr;
  DWORD dwGroupMask;
} SOURCE_GROUP_ENTRY, *PSOURCE_GROUP_ENTRY;

Members

dwSourceAddr

Specifies the source address from which to receive multicast data. Specify zero to receive data from all sources (a wildcard receiver for a group); otherwise, specify the IP address of the source or source network.

To specify a range of source addresses, specify the source network using dwSourceAddr, and specify a subnet mask using dwSourceMask.

dwSourceMask

Specifies the subnet mask that corresponds to dwSourceAddr. The dwSourceAddr and dwSourceMask parameters are used together to define a range of sources from which to receive multicast data.

Specify zero for this parameter if zero was specified for dwSourceAddr (a wildcard receiver).

dwGroupAddr

Specifies the multicast group for which to receive data. Specify zero to receive all groups (a wildcard receiver); otherwise, specify the IP address of the group.

To specify a range of group addresses, specify the group address using dwGroupAddr, and specify a subnet mask using dwGroupMask.

dwGroupMask

Specifies the subnet mask that corresponds to dwGroupAddr. The dwGroupAddr and dwGroupMask parameters are used together to define a range of multicast groups.

Specify zero for this parameter if zero was specified for dwGroupAddr (a wildcard receiver).

Requirements

Requirement	Value
Minimum supported client	None supported
Minimum supported server	Windows 2000 Server [desktop apps only]
Header	mgm.h

See also

MGM_ENUM_TYPES

MgmGroupEnumerationEnd

MgmGroupEnumerationGetNext

MgmGroupEnumerationStart