IWDFDevice2::CreateRemoteTarget method (wudfddi.h)

Artikel
10/21/2021

[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 CreateRemoteTarget method creates a remote target object that represents a remote I/O target.

Syntax

HRESULT CreateRemoteTarget(
  [in, optional] IUnknown         *pCallbackInterface,
  [in, optional] IWDFObject       *pParentObject,
  [out]          IWDFRemoteTarget **ppRemoteTarget
);

Parameters

[in, optional] pCallbackInterface

A pointer to an optional, driver-supplied callback interface. The IUnknown::QueryInterface method of this interface must return a pointer to the driver's IRemoteTargetCallbackRemoval interface, if the driver supports that interface. This parameter is optional and can be NULL.

[in, optional] pParentObject

A pointer to a framework object. If the driver provides this optional pointer, the specified object becomes the parent of the new remote target object. If this parameter is NULL, the device object that provides the IWDFDevice2 interface becomes the parent. The framework will delete the remote target object when it deletes the parent object.

[out] ppRemoteTarget

A pointer to a location that receives a pointer to the IWDFRemoteTarget interface of the new remote target object.

Return value

CreateRemoteTarget returns S_OK if the operation succeeds. Otherwise, the method might return the following value:

Return code	Description
E_OUTOFMEMORY	The framework's attempt to allocate memory failed.
HRESULT_FROM_WIN32 (ERROR_INVALID_PARAMETER)	The pParentObject parameter did not specify the device object that provides the IWDFDevice2 interface or an object whose chain of parents leads to that object.

This method might return one of the other values that Winerror.h contains.

Remarks

After your driver has called CreateRemoteTarget, the driver can open the remote target by calling either IWDFRemoteTarget::OpenRemoteInterface (to open a device interface) or IWDFRemoteTarget::OpenFileByName (to open a file).

If the driver uses the pParentObject parameter to specify a parent object, the parent object can be the device object that provides the IWDFDevice2 interface, or it can be any object whose chain of parents leads to that device object. The framework will delete the remote target object when it (or the driver) deletes the device object.

For more information about remote I/O targets, see Using I/O Targets in UMDF.

Examples

For code examples that use CreateRemoteTarget, see the code examples at IWDFDevice2::CreateRemoteInterface and IWDFRemoteTarget::OpenFileByName.

Requirements

Requirement	Value
End of support	Unavailable in UMDF 2.0 and later.
Target Platform	Desktop
Minimum UMDF version	1.9
Header	wudfddi.h (include Wudfddi.h)
DLL	WUDFx.dll

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