diff options
Diffstat (limited to 'examples/widgets/doc/src/digitalclock.qdoc')
| -rw-r--r-- | examples/widgets/doc/src/digitalclock.qdoc | 51 |
1 files changed, 0 insertions, 51 deletions
diff --git a/examples/widgets/doc/src/digitalclock.qdoc b/examples/widgets/doc/src/digitalclock.qdoc deleted file mode 100644 index d24277177f..0000000000 --- a/examples/widgets/doc/src/digitalclock.qdoc +++ /dev/null @@ -1,51 +0,0 @@ -// Copyright (C) 2016 The Qt Company Ltd. -// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only - -/*! - \example widgets/digitalclock - \title Digital Clock Example - \ingroup examples-widgets - \brief The Digital Clock example shows how to use QLCDNumber to display a - number with LCD-like digits. - - \borderedimage digitalclock-example.png - \caption Screenshot of the Digital Clock example - - This example also demonstrates how QTimer can be used to update a widget - at regular intervals. - - \section1 DigitalClock Class Definition - - The \c DigitalClock class provides a clock widget showing the time with - hours and minutes separated by a blinking colon. We subclass QLCDNumber - and implement a private slot called \c showTime() to update the clock - display: - - \snippet widgets/digitalclock/digitalclock.h 0 - - \section1 DigitalClock Class Implementation - - \snippet widgets/digitalclock/digitalclock.cpp 0 - - In the constructor, we first change the look of the LCD numbers. The - QLCDNumber::Filled style produces raised segments filled with the - foreground color (typically black). We also set up a one-second timer - to keep track of the current time, and we connect - its \l{QTimer::timeout()}{timeout()} signal to the private \c showTime() slot - so that the display is updated every second. Then, we - call the \c showTime() slot; without this call, there would be a one-second - delay at startup before the time is shown. - - \snippet widgets/digitalclock/digitalclock.cpp 1 - \snippet widgets/digitalclock/digitalclock.cpp 2 - - The \c showTime() slot is called whenever the clock display needs - to be updated. - - The current time is converted into a string with the format "hh:mm". - When QTime::second() is a even number, the colon in the string is - replaced with a space. This makes the colon appear and vanish every - other second. - - Finally, we call QLCDNumber::display() to update the widget. -*/ |