IMSVidGraphSegmentContainer::get_Graph Method

Article
01/07/2009

This topic applies to Windows XP or later.
The get_Graph method returns a pointer to the Filter Graph Manager.

Syntax

HRESULT get_Graph(
  [in]  IGraphBuilder **ppGraph
);

Parameters

ppGraph [in]
Address of a variable that receives an IGraphBuilder interface pointer.

Return Value

Returns S_OK if successful, or an HRESULT error code otherwise.

Remarks

Objects can use this method to find a specific DirectShow filter in the filter graph. It is not recommended that applications use this method. Applications should always control the filter graph using the Video Control.

The returned IGraphBuilder interface has an outstanding reference count. The caller must release the interface.

Examples

CComQIPtr<IMSVidGraphSegmentContainer> pSeg(m_pVideoControl);
if (pSeg)
{
    CComPtr<IGraphBuilder> pGraph;
    hr = pSeg->get_Graph(&pGraph);
    if (SUCCEEDED(hr))
    {
        // Use IGraphBuilder::EnumFilters to enumerate the filters.
    }
}

Requirements

Header	Declared in Dshow.h.
DLL	Requires Quartz.dll.

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