COMMCONFIG structure (winbase.h)
Contains information about the configuration state of a communications device.
Syntax
typedef struct _COMMCONFIG {
DWORD dwSize;
WORD wVersion;
WORD wReserved;
DCB dcb;
DWORD dwProviderSubType;
DWORD dwProviderOffset;
DWORD dwProviderSize;
WCHAR wcProviderData[1];
} COMMCONFIG, *LPCOMMCONFIG;
Members
dwSize
The size of the structure, in bytes. The caller must set this member to sizeof(COMMCONFIG).
wVersion
The version number of the structure. This parameter can be 1. The version of the provider-specific structure should be included in the wcProviderData member.
wReserved
Reserved; do not use.
dcb
The device-control block (DCB) structure for RS-232 serial devices. A DCB structure is always present regardless of the port driver subtype specified in the device's COMMPROP structure.
dwProviderSubType
The type of communications provider, and thus the format of the provider-specific data. For a list of communications provider types, see the description of the COMMPROP structure.
dwProviderOffset
The offset of the provider-specific data relative to the beginning of the structure, in bytes. This member is zero if there is no provider-specific data.
dwProviderSize
The size of the provider-specific data, in bytes.
wcProviderData[1]
Optional provider-specific data. This member can be of any size or can be omitted. Because the COMMCONFIG structure may be expanded in the future, applications should use the dwProviderOffset member to determine the location of this member.
Remarks
If the provider subtype is PST_RS232 or PST_PARALLELPORT, the wcProviderData member is omitted. If the provider subtype is PST_MODEM, the wcProviderData member contains a MODEMSETTINGS structure.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP |
| Minimum supported server | Windows Server 2003 |
| Header | winbase.h (include Windows.h) |