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4/8/2010

This method loads a media file.

Syntax 

HRESULT Load(
  LPCOLESTR 
pszFileName,
  const AM_MEDIA_TYPE* 
pmt
);

Parameters

pszFileName

[in] Absolute path of the file to open.

pmt

[in] Media type of the file. This can be NULL.

Return Value

Returns an HRESULTvalue that depends on the implementation.

HRESULTcan be one of the following standard constants or other values not listed.

Value Description

E_FAIL

Failure.

E_POINTER

Null pointer argument.

E_INVALIDARG

Invalid argument.

E_NOTIMPL

Method is not supported.

S_OK or NOERROR

Success.

Remarks

This is an initialization method for the interface. It is not designed to load multiple files, and calls to this method after the first call fail.

Implement this method to load the file specified by pszFileName.

The name in pszFileNameneed not be a disk file name (that is, one you could pass to the Win32 CreateFilefunction, for example). It could also be a URL name. The URL moniker filter uses IFileSourceFilterto retrieve its URL name, and IGraphBuilder::AddSourceFilter(and hence IGraphBuilder::RenderFile) handles this correctly.

IGraphBuilder::AddSourceFilterreturns a specific error (ERROR_FILE_NOT_FOUND) upon not finding the file, which indicates that the file specified does not exist, not that the filter does not exist.

Requirements

Windows Embedded CE Windows CE 2.12 and later
Windows Mobile Windows Mobile Version 5.0 and later
Note Microsoft DirectShow applications and DirectShow filters have different include file and Library requirements
For more information, see Setting Up the Build Environment,
Version 2.12 requires DXPAK 1.0 or later