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< td align = "right" valign = "center" > < img src = "logo32.png" align = "right" width = "64" height = "32" border = "0" > < / td > < / tr > < / table > < h1 align = center > TQIODeviceSource Class Reference< br > < small > [obsolete]< / small > < / h1 >
< p > The TQIODeviceSource class is a TQDataSource that draws data from a TQIODevice.
< a href = "#details" > More...< / a >
< p > < tt > #include < < a href = "qasyncio-h.html" > ntqasyncio.h< / a > > < / tt >
< p > Inherits < a href = "qdatasource.html" > TQDataSource< / a > .
< p > < a href = "qiodevicesource-members.html" > List of all member functions.< / a >
< h2 > Public Members< / h2 >
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< li class = fn > < a href = "#TQIODeviceSource" > < b > TQIODeviceSource< / b > < / a > ( TQIODevice * device, int buffer_size = 4096 )< / li >
< li class = fn > < a href = "#~TQIODeviceSource" > < b > ~TQIODeviceSource< / b > < / a > ()< / li >
< li class = fn > virtual int < a href = "#readyToSend" > < b > readyToSend< / b > < / a > ()< / li >
< li class = fn > virtual void < a href = "#sendTo" > < b > sendTo< / b > < / a > ( TQDataSink * sink, int n )< / li >
< li class = fn > virtual bool < a href = "#rewindable" > < b > rewindable< / b > < / a > () const< / li >
< li class = fn > virtual void < a href = "#enableRewind" > < b > enableRewind< / b > < / a > ( bool on )< / li >
< li class = fn > virtual void < a href = "#rewind" > < b > rewind< / b > < / a > ()< / li >
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< hr > < a name = "details" > < / a > < h2 > Detailed Description< / h2 >
< b > This class is obsolete.< / b > It is provided to keep old source working. We strongly advise against using it in new code.
< p > The TQIODeviceSource class is a TQDataSource that draws data from a < a href = "ntqiodevice.html" > TQIODevice< / a > .
< p > This class encapsulates retrieving data from a TQIODevice (such as a < a href = "ntqfile.html" > TQFile< / a > ).
< hr > < h2 > Member Function Documentation< / h2 >
< h3 class = fn > < a name = "TQIODeviceSource" > < / a > TQIODeviceSource::TQIODeviceSource ( < a href = "ntqiodevice.html" > TQIODevice< / a > * device, int buffer_size = 4096 )
< / h3 >
Constructs a TQIODeviceSource from the < a href = "ntqiodevice.html" > TQIODevice< / a > < em > device< / em > . The TQIODevice
< em > must< / em > be dynamically allocated, becomes owned by the TQIODeviceSource,
and will be deleted when the TQIODeviceSource is destroyed. < em > buffer_size< / em >
determines the size of buffering to use between asynchronous operations.
The higher the < em > buffer_size< / em > , the more efficient, but the less interleaved
the operation will be with other processing.
< h3 class = fn > < a name = "~TQIODeviceSource" > < / a > TQIODeviceSource::~TQIODeviceSource ()
< / h3 >
Destroys the TQIODeviceSource, deleting the < a href = "ntqiodevice.html" > TQIODevice< / a > from which it was
constructed.
< h3 class = fn > void < a name = "enableRewind" > < / a > TQIODeviceSource::enableRewind ( bool on )< tt > [virtual]< / tt >
< / h3 >
If < em > on< / em > is set to TRUE then rewinding is enabled.
No special action is taken. If < em > on< / em > is set to
FALSE then rewinding is disabled.
< p > Reimplemented from < a href = "qdatasource.html#enableRewind" > TQDataSource< / a > .
< h3 class = fn > int < a name = "readyToSend" > < / a > TQIODeviceSource::readyToSend ()< tt > [virtual]< / tt >
< / h3 >
Ready until end-of-file.
< p > Reimplemented from < a href = "qdatasource.html#readyToSend" > TQDataSource< / a > .
< h3 class = fn > void < a name = "rewind" > < / a > TQIODeviceSource::rewind ()< tt > [virtual]< / tt >
< / h3 >
Calls reset() on the < a href = "ntqiodevice.html" > TQIODevice< / a > .
< p > Reimplemented from < a href = "qdatasource.html#rewind" > TQDataSource< / a > .
< h3 class = fn > bool < a name = "rewindable" > < / a > TQIODeviceSource::rewindable () const< tt > [virtual]< / tt >
< / h3 >
All TQIODeviceSource's are rewindable.
< p > Reimplemented from < a href = "qdatasource.html#rewindable" > TQDataSource< / a > .
< h3 class = fn > void < a name = "sendTo" > < / a > TQIODeviceSource::sendTo ( < a href = "qdatasink.html" > TQDataSink< / a > * sink, int n )< tt > [virtual]< / tt >
< / h3 >
Reads a block of data and sends up to < em > n< / em > bytes to the < em > sink< / em > .
< p > Reimplemented from < a href = "qdatasource.html#sendTo" > TQDataSource< / a > .
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