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IWDFMemory::GetDataBuffer 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 GetDataBuffer method retrieves the data buffer that is associated with a memory object.

Syntax

void * GetDataBuffer(
  [out, optional] SIZE_T *BufferSize
);

Parameters

[out, optional] BufferSize

A pointer to a variable that receives information that describes the size of the data buffer.

This parameter is optional. The driver can pass NULL if the driver does not require the information.

Return value

GetDataBuffer returns a pointer to the data buffer.

Remarks

For a code example of how to use the GetDataBuffer method, see IWDFDevice::SetPnpState.

Requirements

Requirement Value
End of support Unavailable in UMDF 2.0 and later.
Target Platform Desktop
Minimum UMDF version 1.5
Header wudfddi.h (include Wudfddi.h)
DLL WUDFx.dll

See also