The INSSBuffer4 interface provides methods to enumerate buffer properties. These methods are important when reading files that may have properties of which you are not aware.
An INSSBuffer4 interface exists for every buffer object. To retrieve a pointer to an instance of INSSBuffer4, call the QueryInterface method of one of the other interfaces in the buffer object, typically INSSBuffer.
The following interfaces can be obtained by using the QueryInterface method of this interface.
The INSSBuffer4 interface inherits from INSSBuffer3. INSSBuffer4 also has these types of members:
The INSSBuffer4 interface has these methods.
Retrieves a buffer property, also called a data unit extension, using an index instead of a name.
Retrieves the total count of buffer properties associated with the sample.