SP_POWERMESSAGEWAKE_PARAMS_A structure (setupapi.h)
An SP_POWERMESSAGEWAKE_PARAMS structure corresponds to a DIF_POWERMESSAGEWAKE installation request.
Syntax
typedef struct _SP_POWERMESSAGEWAKE_PARAMS_A {
SP_CLASSINSTALL_HEADER ClassInstallHeader;
CHAR *PowerMessageWake[LINE_LEN 2];
} SP_POWERMESSAGEWAKE_PARAMS_A, *PSP_POWERMESSAGEWAKE_PARAMS_A;
Members
ClassInstallHeader
An install request header that contains the header size and the DIF code for the request. See SP_CLASSINSTALL_HEADER.
PowerMessageWake[LINE_LEN * 2]
Buffer that contains a string of custom text. Windows displays this text on the power management page of the device properties display in Device Manager.
Remarks
Windows only sends the DIF_POWERMESSAGEWAKE request if the drivers for the device support power management.
Note
The setupapi.h header defines SP_POWERMESSAGEWAKE_PARAMS as an alias that automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that is not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.
Requirements
| Requirement | Value |
|---|---|
| Header | setupapi.h (include Setupapi.h) |