IGraphVersion::QueryVersion (Compact 2013)

  • Article

3/26/2014

This method returns the current graph version number.

Syntax

HRESULT QueryVersion(
 LONG* pVersion
);

Parameters

  • pVersion
    [out] Pointer to the current graph version number.

Return Value

Returns an HRESULT value that depends on the implementation. HRESULT can 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

The version number is incremented every time there is a change in the set of filters in the graph or in their connections. If the version number has changed since the last enumeration, the graph must be re-enumerated.

Requirements

Header

dshow.h

Library

Strmiids.lib

See Also

Reference

IGraphVersion Interface