CRowsetImpl::GetColumnInfo

static ATLCOLUMNINFO* GetColumnInfo( T* pv**, ULONG*** pcCols );

Return Value

A pointer to a static ATLCOLUMNINFO structure.

Parameters

pv

[in] A pointer to the user’s CRowsetImpl derived class.

pcCols

[in] A pointer (output) to the number of columns returned.

Remarks

This method is an advanced override.

This method is called by several base implementation classes to retrieve column information for a particular client request. Usually, this method would be called by IColumnsInfoImpl. If you override this method, you must place a version of the method in your CRowsetImpl-derived class. Because the method may be placed in a non-templatized class, you must change pv to the appropriate CRowsetImpl-derived class.

The following example demonstrates GetColumnInfo's usage. In this example, CMyRowset is a CRowsetImpl-derived class. In order to override GetColumnInfo for all instances of this class, place the following method in the CMyRowset class definition:

   static ATLCOLUMNINFO* GetColumnInfo(CMyRowset* pRowset, ULONG* pcCols)
{
   ....
}

Both the sample and the sample demonstrate overriding this method.

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