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IWDFCmResourceList::GetDescriptor method (wudfddi.h)

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[Warning: UMDF 2 is the latest version of UMDF and supersedes UMDF 1. All new UMDF drivers should be written using UMDF 2. No new features are being added to UMDF 1 and there is limited support for UMDF 1 on newer versions of Windows 10. Universal Windows drivers must use UMDF 2. For more info, see Getting Started with UMDF.]

The GetDescriptor method returns a pointer to a resource descriptor that is contained in this interface's resource list.

Syntax

PCM_PARTIAL_RESOURCE_DESCRIPTOR GetDescriptor(
  ULONG Index
);

Parameters

Index

A zero-based index into the logical configuration that is contained in this interface's resource list.

Return value

GetDescriptor returns a pointer to a CM_PARTIAL_RESOURCE_DESCRIPTOR structure.

Remarks

Drivers typically call GetDescriptor from within OnPrepareHardware, before calling MapIoSpace.

The CM_PARTIAL_RESOURCE_DESCRIPTOR structure is defined in Wudfwdm.h.

For more information about parsing hardware resources, see Finding and Mapping Hardware Resources in a UMDF Driver.

Examples

See example code in IWDFDevice3::MapIoSpace.

Requirements

Requirement Value
End of support Unavailable in UMDF 2.0 and later.
Target Platform Desktop
Minimum UMDF version 1.11
Header wudfddi.h
DLL WUDFx.dll

See also

IWDFCmResourceList