SetupDiClassGuidsFromNameA function (setupapi.h)
The SetupDiClassGuidsFromName function retrieves the GUID(s) associated with the specified class name. This list is built based on the classes currently installed on the system.
Syntax
WINSETUPAPI BOOL SetupDiClassGuidsFromNameA(
[in] PCSTR ClassName,
[out] LPGUID ClassGuidList,
[in] DWORD ClassGuidListSize,
[out] PDWORD RequiredSize
);
Parameters
[in] ClassName
The name of the class for which to retrieve the class GUID.
[out] ClassGuidList
A pointer to an array to receive the list of GUIDs associated with the specified class name.
[in] ClassGuidListSize
The number of GUIDs in the ClassGuidList array.
[out] RequiredSize
Supplies a pointer to a variable that receives the number of GUIDs associated with the class name. If this number is greater than the size of the ClassGuidList buffer, the number indicates how large the array must be in order to store all the GUIDs.
Return value
The function returns TRUE if it is successful. Otherwise, it returns FALSE and the logged error can be retrieved by making a call to GetLastError.
Remarks
Call SetupDiClassGuidsFromNameEx to retrieve the class GUIDs for a class on a remote computer.
Note
The setupapi.h header defines SetupDiClassGuidsFromName 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 |
|---|---|
| Minimum supported client | Available in Microsoft Windows 2000 and later versions of Windows. |
| Target Platform | Desktop |
| Header | setupapi.h (include Setupapi.h) |
| Library | Setupapi.lib |