5 files changed, 26 insertions, 4 deletions
diff --git a/src/gui/image/qimagereader.cpp b/src/gui/image/qimagereader.cpp
index 1fa1058..e7b1000 100644
--- a/src/gui/image/qimagereader.cpp
+++ b/src/gui/image/qimagereader.cpp
@@ -1482,6 +1482,9 @@ QByteArray QImageReader::imageFormat(QIODevice *device)
     configure script or check the appropriate option in the graphical
     installer.
 
+    Note that the QApplication instance must be created before this function is
+    called.
+
     \sa setFormat(), QImageWriter::supportedImageFormats(), QImageIOPlugin
 */
 QList<QByteArray> QImageReader::supportedImageFormats()
diff --git a/src/gui/image/qimagewriter.cpp b/src/gui/image/qimagewriter.cpp
index 8a65ac0..504260a 100644
--- a/src/gui/image/qimagewriter.cpp
+++ b/src/gui/image/qimagewriter.cpp
@@ -679,6 +679,9 @@ bool QImageWriter::supportsOption(QImageIOHandler::ImageOption option) const
     Reading and writing SVG files is supported through Qt's
     \l{QtSvg Module}{SVG Module}.
 
+    Note that the QApplication instance must be created before this function is
+    called.
+
     \sa setFormat(), QImageReader::supportedImageFormats(), QImageIOPlugin
 */
 QList<QByteArray> QImageWriter::supportedImageFormats()
diff --git a/src/gui/itemviews/qstyleditemdelegate.cpp b/src/gui/itemviews/qstyleditemdelegate.cpp
index 0d1473d..eb54bac 100644
--- a/src/gui/itemviews/qstyleditemdelegate.cpp
+++ b/src/gui/itemviews/qstyleditemdelegate.cpp
@@ -263,6 +263,11 @@ QStyledItemDelegate::~QStyledItemDelegate()
 
     The default implementation uses the QLocale::toString to convert \a value into
     a QString.
+
+    This function is not called for empty model indices, i.e., indices for which
+    the model returns an invalid QVariant.
+
+    \sa QAbstractItemModel::data()
 */
 QString QStyledItemDelegate::displayText(const QVariant &value, const QLocale& locale) const
 {
diff --git a/src/gui/kernel/qwidget.cpp b/src/gui/kernel/qwidget.cpp
index 0a73481..fd9deb5 100644
--- a/src/gui/kernel/qwidget.cpp
+++ b/src/gui/kernel/qwidget.cpp
@@ -599,6 +599,8 @@ void QWidget::setAutoFillBackground(bool enabled)
 
     \ingroup basicwidgets
 
+    \meta {technology} {User Interface}
+    \meta {platform} {all}
 
     The widget is the atom of the user interface: it receives mouse, keyboard
     and other events from the window system, and paints a representation of
diff --git a/src/multimedia/audio/qaudioinput.cpp b/src/multimedia/audio/qaudioinput.cpp
index 3767b95..77ecf70 100644
--- a/src/multimedia/audio/qaudioinput.cpp
+++ b/src/multimedia/audio/qaudioinput.cpp
@@ -202,7 +202,13 @@ QAudioInput::~QAudioInput()
 /*!
      Uses the \a device as the QIODevice to transfer data.
      Passing a QIODevice allows the data to be transferred without any extra code.
-     All that is required is to open the QIODevice.
+     All that is required is to open the QIODevice. QAudioInput does not take
+     ownership of \a device.
+
+     The QAudioInput will write to the device when new data is available. You can
+     subclass QIODevice and reimplement \l{QIODevice::}{writeData()} if you wish to
+     access the data. If you simply want to save data to a file, you can pass a
+     QFile to this function.
 
      If able to successfully get audio data from the systems audio device the
      state() is set to either QAudio::ActiveState or QAudio::IdleState,
@@ -222,9 +228,12 @@ void QAudioInput::start(QIODevice* device)
 }
 
 /*!
-    Returns a pointer to the QIODevice being used to handle the data
-    transfer. This QIODevice can be used to read() audio data
-    directly.
+
+    Returns a pointer to a new QIODevice that will be used to handle the data transfer.
+    This QIODevice can be used to \l{QIODevice::}{read()} audio data directly.
+    You will typically connect to the \l{QIODevice::}{readyRead()} signal, and
+    read from the device in the slot you connect to. QAudioInput keeps ownership
+    of the device.
 
     If able to access the systems audio device the state() is set to
     QAudio::IdleState, error() is set to QAudio::NoError