QDebug Class

     qDebug() << "Date:" << QDate::currentDate();
     qDebug() << "Types:" << QString("String") << QChar('x') << QRect(0, 10, 50, 40);
     qDebug() << "Custom coordinate type:" << coordinate;

 QDebug operator<<(QDebug dbg, const Coordinate &c)
 {
     dbg.nospace() << "(" << c.x() << ", " << c.y() << ")";

     return dbg.space();
 }

Member Function Documentation

QDebug::QDebug(QIODevice * device)

Constructs a debug stream that writes to the given device.

QDebug::QDebug(QString * string)

Constructs a debug stream that writes to the given string.

QDebug::QDebug(QtMsgType type)

Constructs a debug stream that writes to the handler for the message type specified by type.

QDebug::QDebug(const QDebug & other)

Constructs a copy of the other debug stream.

QDebug::~QDebug()

Flushes any pending data to be written and destroys the debug stream.

QDebug & QDebug::maybeSpace()

Writes a space character to the debug stream, depending on the last character sent to the stream, and returns a reference to the stream.

If the last character was a space character, this function writes a space character to the stream; otherwise, no characters are written to the stream.

See also space() and nospace().

QDebug & QDebug::nospace()

Clears the stream's internal flag that records whether the last character was a space and returns a reference to the stream.

See also space() and maybeSpace().

QDebug & QDebug::space()

Writes a space character to the debug stream and returns a reference to the stream.

The stream will record that the last character sent to the stream was a space.

See also nospace() and maybeSpace().

QDebug & QDebug::operator<<(QChar t)

Writes the character, t, to the stream and returns a reference to the stream.

QDebug & QDebug::operator<<(bool t)

Writes the boolean value, t, to the stream and returns a reference to the stream.

QDebug & QDebug::operator<<(char t)

Writes the character, t, to the stream and returns a reference to the stream.

QDebug & QDebug::operator<<(signed short i)

Writes the signed short integer, i, to the stream and returns a reference to the stream.

QDebug & QDebug::operator<<(unsigned short i)

Writes then unsigned short integer, i, to the stream and returns a reference to the stream.

QDebug & QDebug::operator<<(signed int i)

Writes the signed integer, i, to the stream and returns a reference to the stream.

QDebug & QDebug::operator<<(unsigned int i)

Writes then unsigned integer, i, to the stream and returns a reference to the stream.

QDebug & QDebug::operator<<(signed long l)

Writes the signed long integer, l, to the stream and returns a reference to the stream.

QDebug & QDebug::operator<<(unsigned long l)

Writes then unsigned long integer, l, to the stream and returns a reference to the stream.

QDebug & QDebug::operator<<(qint64 i)

Writes the signed 64-bit integer, i, to the stream and returns a reference to the stream.

QDebug & QDebug::operator<<(quint64 i)

Writes then unsigned 64-bit integer, i, to the stream and returns a reference to the stream.

QDebug & QDebug::operator<<(float f)

Writes the 32-bit floating point number, f, to the stream and returns a reference to the stream.

QDebug & QDebug::operator<<(double f)

Writes the 64-bit floating point number, f, to the stream and returns a reference to the stream.

QDebug & QDebug::operator<<(const char * s)

Writes the '\0'-terminated string, s, to the stream and returns a reference to the stream.

QDebug & QDebug::operator<<(const QString & s)

Writes the string, s, to the stream and returns a reference to the stream.

QDebug & QDebug::operator<<(const QStringRef & s)

Writes the string reference, s, to the stream and returns a reference to the stream.

QDebug & QDebug::operator<<(QLatin1String s)

Writes the Latin1-encoded string, s, to the stream and returns a reference to the stream.

QDebug & QDebug::operator<<(const QByteArray & b)

Writes the byte array, b, to the stream and returns a reference to the stream.

QDebug & QDebug::operator<<(const void * p)

Writes a pointer, p, to the stream and returns a reference to the stream.

QDebug & QDebug::operator=(const QDebug & other)

Assigns the other debug stream to this stream and returns a reference to this stream.