// wdfmemory.h

typedef enum _WDF_MEMORY_DESCRIPTOR_TYPE {
  WdfMemoryDescriptorTypeInvalid = 0,
  WdfMemoryDescriptorTypeBuffer,
  WdfMemoryDescriptorTypeMdl,
  WdfMemoryDescriptorTypeHandle
} WDF_MEMORY_DESCRIPTOR_TYPE;
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Windows Driver Kit DDI reference (ne-wdfmemory-_wdf_memory_descriptor_type)

_WDF_MEMORY_DESCRIPTOR_TYPE enumeration

Description

[Applies to KMDF and UMDF]

The WDF_MEMORY_DESCRIPTOR_TYPE enumeration identifies the types of memory descriptions that a WDF_MEMORY_DESCRIPTOR structure can specify.

Constants

`WdfMemoryDescriptorTypeInvalid:0`

Reserved for internal use only.

`WdfMemoryDescriptorTypeBuffer`

The WDF_MEMORY_DESCRIPTOR structure contains a buffer description.

`WdfMemoryDescriptorTypeMdl`

The WDF_MEMORY_DESCRIPTOR structure contains a memory descriptor list (MDL).

`WdfMemoryDescriptorTypeHandle`

The WDF_MEMORY_DESCRIPTOR structure contains a handle to a memory object.

WDF_MEMORY_DESCRIPTOR_TYPE - NtDoc