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diff --git a/doc/src/examples/lineedits.qdoc b/doc/src/examples/lineedits.qdoc deleted file mode 100644 index 70d85cff69..0000000000 --- a/doc/src/examples/lineedits.qdoc +++ /dev/null @@ -1,161 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** This file is part of the documentation of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:FDL$ -** GNU Free Documentation License -** Alternatively, this file may be used under the terms of the GNU Free -** Documentation License version 1.3 as published by the Free Software -** Foundation and appearing in the file included in the packaging of -** this file. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms -** and conditions contained in a signed written agreement between you -** and Nokia. -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -/*! - \example widgets/lineedits - \title Line Edits Example - - The Line Edits example demonstrates the many ways that QLineEdit can be used, and - shows the effects of various properties and validators on the input and output - supplied by the user. - - \image lineedits-example.png - - The example consists of a single \c Window class, containing a selection of - line edits with different input constraints and display properties that can be - changed by selecting items from comboboxes. Presenting these together helps - developers choose suitable properties to use with line edits, and makes it easy - to compare the effects of each validator on user input. - - \section1 Window Class Definition - - The \c Window class inherits QWidget and contains a constructor and several - slots: - - \snippet examples/widgets/lineedits/window.h 0 - - The slots are used to update the type of validator used for a given line edit when - a new validator has been selected in the associated combobox. The line edits - are stored in the window for use in these slots. - - \section1 Window Class Implementation - - The \c Window constructor is used to set up the line edits, validators, - and comboboxes, connect signals from the comboboxes to slots in the \c Window - class, and arrange the child widgets in layouts. - - We begin by constructing a \l{QGroupBox}{group box} to hold a label, combobox, - and line edit so that we can demonstrate the QLineEdit::echoMode property: - - \snippet examples/widgets/lineedits/window.cpp 0 - - At this point, none of these widgets have been arranged in layouts. Eventually, - the \c echoLabel, \c echoComboBox, and \c echoLineEdit will be placed in a - vertical layout inside the \c echoGroup group box. - - Similarly, we construct group boxes and collections of widgets to show the - effects of QIntValidator and QDoubleValidator on a line edit's contents: - - \snippet examples/widgets/lineedits/window.cpp 1 - - Text alignment is demonstrated by another group of widgets: - - \snippet examples/widgets/lineedits/window.cpp 2 - - QLineEdit supports the use of \l{QLineEdit::inputMask}{input masks}. - These only allow the user to type characters into the line edit that - follow a simple specification. We construct a group of widgets to - demonstrate a selection of predefined masks: - - \snippet examples/widgets/lineedits/window.cpp 3 - - Another useful feature of QLineEdit is its ability to make its contents - read-only. This property is used to control access to a line edit in the - following group of widgets: - - \snippet examples/widgets/lineedits/window.cpp 4 - - Now that all the child widgets have been constructed, we connect signals - from the comboboxes to slots in the \c Window object: - - \snippet examples/widgets/lineedits/window.cpp 5 - - Each of these connections use the QComboBox::activated() signal that - supplies an integer to the slot. This will be used to efficiently - make changes to the appropriate line edit in each slot. - - We place each combobox, line edit, and label in a layout for each group - box, beginning with the layout for the \c echoGroup group box: - - \snippet examples/widgets/lineedits/window.cpp 6 - - The other layouts are constructed in the same way: - - \snippet examples/widgets/lineedits/window.cpp 7 - - Finally, we place each group box in a grid layout for the \c Window object - and set the window title: - - \snippet examples/widgets/lineedits/window.cpp 8 - - The slots respond to signals emitted when the comboboxes are changed by the - user. - - When the combobox for the \uicontrol{Echo} group box is changed, the \c echoChanged() - slot is called: - - \snippet examples/widgets/lineedits/window.cpp 9 - - The slot updates the line edit in the same group box to use an echo mode that - corresponds to the entry described in the combobox. - - When the combobox for the \uicontrol{Validator} group box is changed, the - \c validatorChanged() slot is called: - - \snippet examples/widgets/lineedits/window.cpp 10 - - The slot either creates a new validator for the line edit to use, or it removes - the validator in use by calling QLineEdit::setValidator() with a zero pointer. - We clear the line edit in this case to ensure that the new validator is - initially given valid input to work with. - - When the combobox for the \uicontrol{Alignment} group box is changed, the - \c alignmentChanged() slot is called: - - \snippet examples/widgets/lineedits/window.cpp 11 - - This changes the way that text is displayed in the line edit to correspond with - the description selected in the combobox. - - The \c inputMaskChanged() slot handles changes to the combobox in the - \uicontrol{Input Mask} group box: - - \snippet examples/widgets/lineedits/window.cpp 12 - - Each entry in the relevant combobox is associated with an input mask. We set - a new mask by calling the QLineEdit::setMask() function with a suitable string; - the mask is disabled if an empty string is used. - - The \c accessChanged() slot handles changes to the combobox in the - \uicontrol{Access} group box: - - \snippet examples/widgets/lineedits/window.cpp 13 - - Here, we simply associate the \uicontrol{False} and \uicontrol{True} entries in the combobox - with \c false and \c true values to be passed to QLineEdit::setReadOnly(). This - allows the user to enable and disable input to the line edit. -*/ |