---
name: "qnpstream"
section: "3qt"
platform: "linux"
package: "qt3-doc"
version: "3:3.3.8b-7"
release: "Debian 6.0 (Squeeze)"
platforms: ["linux"]
url: "https://new.carta.tech/qnpstream"
---

# qnpstream(3qt)

Stream of data provided to a QNPInstance by the browser

## NAME

QNPStream - Stream of data provided to a QNPInstance by the browser

## SYNOPSIS

This class is part of the **Qt Netscape Extension**.

`#include <qnp.h>`

### Public Members

**~QNPStream ()**\
 **const char \* url () const**\
 **uint end () const**\
 **uint lastModified () const**\
 **const char \* type () const**\
 **bool seekable () const**\
 **bool okay () const**\
 **bool complete () const**\
 **void requestRead ( int offset, uint length )**\
 **int write ( int len, void \* buffer )**\
 **QNPInstance \* instance ()**\
 **QNPStream ( QNPInstance \* in, const char \* mt, \_NPStream \* st, bool se )**\

## DESCRIPTION

This class is defined in the **Qt Netscape Extension**, which can be found in the `qt/extensions` directory. It is not included in the main Qt API.

The QNPStream class provides a stream of data provided to a QNPInstance by the browser.

Note that this is neither a QTextStream nor a QDataStream.

See also QNPInstance::write() and QNPInstance::newStreamCreated().

## MEMBER FUNCTION DOCUMENTATION

## QNPStream::QNPStream ( QNPInstance \* in, const char \* mt, \_NPStream \* st, bool se )

Creates a stream. Plugins should not call this; they should call QNPInstance::newStream() if they need a stream.

Takes a QNPInstance *in*, MIME type *mt*, a pointer to an \_NPStream *st* and a seekable flag *se*.

## QNPStream::~QNPStream ()

Destroys the stream.

## bool QNPStream::complete () const

Returns TRUE if the stream has received all the data from the source; otherwise returns FALSE.

## uint QNPStream::end () const

Returns the length of the stream in bytes. The function might return 0 for streams of unknown length.

## QNPInstance \* QNPStream::instance ()

Returns the QNPInstance for which this stream was created.

## uint QNPStream::lastModified () const

Returns the time when the source of the stream was last modified.

## bool QNPStream::okay () const

Returns TRUE if no errors have occurred on the stream; otherwise returns FALSE.

## void QNPStream::requestRead ( int offset, uint length )

Requests the section of the stream, of *length* bytes from *offset*, be sent to the QNPInstance::write() function of the instance() of this stream.

## bool QNPStream::seekable () const

Returns TRUE if the stream is seekable; otherwise returns FALSE.

## const char \* QNPStream::type () const

Returns the MIME type of the stream.

## const char \* QNPStream::url () const

Returns the URL from which the stream was created.

## int QNPStream::write ( int len, void \* buffer )

Writes *len* bytes from *buffer* *to* the stream.

## SEE ALSO

**http://doc.trolltech.com/qnpstream.html** **http://www.trolltech.com/faq/tech.html**

## COPYRIGHT

Copyright 1992-2007 Trolltech ASA, http://www.trolltech.com.  See the license file included in the distribution for a complete license statement.

## AUTHOR

Generated automatically from the source code.

## BUGS

If you find a bug in Qt, please report it as described in **http://doc.trolltech.com/bughowto.html**. Good bug reports help us to help you. Thank you.

The definitive Qt documentation is provided in HTML format; it is located at $QTDIR/doc/html and can be read using Qt Assistant or with a web browser. This man page is provided as a convenience for those users who prefer man pages, although this format is not officially supported by Trolltech.

If you find errors in this manual page, please report them to **qt-bugs@trolltech.com**. Please include the name of the manual page (qnpstream.3qt) and the Qt version (3.3.8).