# NNS_McsGetStreamWritableLength

## Syntax

      #include <nnsys/mcs.h>

      BOOL NNS_McsGetStreamWritableLength(u32* pLength);

## Arguments

pLength | Pointer to the variable to put the size (number of bytes) that can be sent at once.

## Return Values

TRUE if the function succeeds. FALSE otherwise.

## Description

Obtains the size (number of bytes) that can be sent at once. When using the function `NNS_McsWriteStream` to write the data that exceeds the size that can be sent at once, function calls will be blocked until the PC reads the written data, and control will not be returned.

## See Also

`NNS_McsWriteStream`

## Revision History

2004/11/30 Added description. 2004/06/01 Initial version.

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