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IDWriteTextLayout::GetClusterMetrics method

Retrieves logical properties and measurements of each glyph cluster.

Syntax

C++


virtual HRESULT GetClusterMetrics(
  [out, optional] DWRITE_CLUSTER_METRICS * clusterMetrics,
                  UINT32                  maxClusterCount,
  [out]           UINT32                 * actualClusterCount
) = 0;

Parameters

clusterMetrics [out, optional]

Type: DWRITE_CLUSTER_METRICS*

When this method returns, contains metrics, such as line-break or total advance width, for a glyph cluster.

maxClusterCount

Type: UINT32

The maximum size of the clusterMetrics array.

actualClusterCount [out]

Type: UINT32*

When this method returns, contains the actual size of the clusterMetrics array that is needed.

Return value

Type: HRESULT

If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Remarks

If maxClusterCount is not large enough, then E_NOT_SUFFICIENT_BUFFER, which is equivalent to HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER), is returned and actualClusterCount is set to the number of clusters needed.

Requirements

Minimum supported client	Windows 7, Windows Vista with SP2 and Platform Update for Windows Vista [desktop apps \| Windows Store apps]
Minimum supported server	Windows Server 2008 R2, Windows Server 2008 with SP2 and Platform Update for Windows Server 2008 [desktop apps \| Windows Store apps]
Minimum supported phone	Windows Phone 8.1 [Windows Phone Silverlight 8.1 and Windows Runtime apps]
Header	Dwrite.h
Library	Dwrite.lib
DLL	Dwrite.dll