MFTUnregisterLocal function (mfapi.h)

Article
10/13/2021

Unregisters one or more Media Foundation transforms (MFTs) from the caller's process.

Syntax

HRESULT MFTUnregisterLocal(
  [in] IClassFactory *pClassFactory
);

Parameters

[in] pClassFactory

A pointer to the IClassFactory interface of a class factory object. This parameter can be NULL.

Return value

The function returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Return code	Description
S_OK	The method succeeded.
HRESULT_FROM_WIN32(ERROR_NOT_FOUND)	The MFT specified by the pClassFactory parameter was not registered in this process.

Remarks

Use this function to unregister a local MFT that was previously registered through the MFTRegisterLocal function.

If the pClassFactory parameter is NULL, all local MFTs in the process are unregistered. Otherwise, the function unregisters the MFT associated with the class factory specified by the pClassFactory parameter. In that case, the pClassFactory parameter should equal a pointer value that was previously passed to the MFTRegisterLocal function.

Requirements

Requirement	Value
Minimum supported client	Windows 7 [desktop apps only]
Minimum supported server	Windows Server 2008 R2 [desktop apps only]
Target Platform	Windows
Header	mfapi.h
Library	Mfplat.lib
DLL	Mfplat.dll