AVIStreamPrevSample macro (vfw.h)

The AVIStreamPrevSample macro locates the nearest nonempty sample that precedes a specified position in a stream.

Syntax

LONG AVIStreamPrevSample(
     pavi,
     l
);

pavi

Handle to an open stream.

l

Starting position to search in the stream.

Type: LONG

Returns the sample position if successful or –1 otherwise.

The sample position returned does not include the sample specified by l.

The AVIStreamPrevSample macro is defined as follows:


#define AVIStreamPrevSample(pavi, l) \ 
    AVIStreamFindSample(pavi, l - 1, FIND_PREV | FIND_ANY)

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Target Platform	Windows
Header	vfw.h