The SetupDiClassGuidsFromNameEx function retrieves the GUIDs associated with the specified class name. This resulting list contains the classes currently installed on a local or remote computer.

WINSETUPAPI BOOL WINAPI
  SetupDiClassGuidsFromNameEx(
    IN PCTSTR  ClassName,
    OUT LPGUID  ClassGuidList,
    IN DWORD  ClassGuidListSize,
    OUT PDWORD  RequiredSize,
    IN PCTSTR  MachineName..OPTIONAL,
    IN PVOID  Reserved
    );

Parameters

ClassName

The name of the class for which to retrieve the class GUIDs.

ClassGuidList

A pointer to an array to receive the list of GUIDs associated with the specified class name.

ClassGuidListSize

The number of GUIDs in the ClassGuidList array.

RequiredSize

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.

MachineName

A pointer to a NULL-terminated string that contains the name of a remote system from which to retrieve the GUIDs. This parameter is optional and can be NULL. If MachineName is NULL, the local system name is used.

Reserved

Must be NULL.

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.

Comments

Class names are not guaranteed to be unique; only GUIDs are unique. Therefore, one class name can return more than one GUID.

Requirements

Versions: The SetupDiClassGuidsFromNameEx function is available in Microsoft Windows 2000 and later versions of Windows.

Headers: Declared in Setupapi.h. Include Setupapi.h.

Library: Contained in Setupapi.lib. Link to Setupapi.lib.

See Also

SetupDiClassGuidsFromName, SetupDiClassNameFromGuidEx