IWDFCmResourceList::GetDescriptor method (wudfddi.h)
[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 |