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395 lines
16 KiB
395 lines
16 KiB
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/lineedits/lineedits.doc:4 -->
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>Line Edits</title>
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<style type="text/css"><!--
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fn { margin-left: 1cm; text-indent: -1cm; }
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a:link { color: #004faf; text-decoration: none }
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a:visited { color: #672967; text-decoration: none }
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body { background: #ffffff; color: black; }
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--></style>
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</head>
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<body>
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<table border="0" cellpadding="0" cellspacing="0" width="100%">
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<tr bgcolor="#E5E5E5">
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<td valign=center>
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<a href="index.html">
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<font color="#004faf">Home</font></a>
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| <a href="classes.html">
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<font color="#004faf">All Classes</font></a>
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<font color="#004faf">Main Classes</font></a>
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<font color="#004faf">Annotated</font></a>
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| <a href="groups.html">
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<font color="#004faf">Grouped Classes</font></a>
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| <a href="functions.html">
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<font color="#004faf">Functions</font></a>
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</td>
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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>Line Edits</h1>
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<p>
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This example shows how to work with single lineedit widgets, and
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how to use different echo modes and validators.
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<p> <hr>
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<p> Header file:
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<p> <pre>/****************************************************************************
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** $Id: qt/lineedits.h 3.3.8 edited Jan 11 14:37 $
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**
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** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
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**
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** This file is part of an example program for TQt. This example
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** program may be used, distributed and modified without limitation.
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**
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*****************************************************************************/
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#ifndef LINEDITS_H
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#define LINEDITS_H
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#include <<a href="qgroupbox-h.html">ntqgroupbox.h</a>>
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class TQLineEdit;
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class TQComboBox;
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class LineEdits : public <a href="ntqgroupbox.html">TQGroupBox</a>
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{
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<a href="metaobjects.html#TQ_OBJECT">TQ_OBJECT</a>
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public:
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LineEdits( <a href="ntqwidget.html">TQWidget</a> *parent = 0, const char *name = 0 );
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protected:
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<a href="ntqlineedit.html">TQLineEdit</a> *lined1, *lined2, *lined3, *lined4, *lined5;
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<a href="ntqcombobox.html">TQComboBox</a> *combo1, *combo2, *combo3, *combo4, *combo5;
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protected slots:
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void slotEchoChanged( int );
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void slotValidatorChanged( int );
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void slotAlignmentChanged( int );
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void slotInputMaskChanged( int );
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void slotReadOnlyChanged( int );
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};
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#endif
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</pre>
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<p> <hr>
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<p> Implementation:
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<p> <pre>/****************************************************************************
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** $Id: qt/lineedits.cpp 3.3.8 edited Jan 11 14:37 $
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**
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** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
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**
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** This file is part of an example program for TQt. This example
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** program may be used, distributed and modified without limitation.
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**
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*****************************************************************************/
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#include "lineedits.h"
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#include <<a href="qlineedit-h.html">ntqlineedit.h</a>>
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#include <<a href="qcombobox-h.html">ntqcombobox.h</a>>
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#include <<a href="qframe-h.html">ntqframe.h</a>>
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#include <<a href="qvalidator-h.html">ntqvalidator.h</a>>
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#include <<a href="qlabel-h.html">ntqlabel.h</a>>
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#include <<a href="qlayout-h.html">ntqlayout.h</a>>
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#include <<a href="qhbox-h.html">ntqhbox.h</a>>
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/*
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* Constructor
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*
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* Creates child widgets of the LineEdits widget
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*/
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<a name="f219"></a>LineEdits::LineEdits( <a href="ntqwidget.html">TQWidget</a> *parent, const char *name )
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: <a href="ntqgroupbox.html">TQGroupBox</a>( 0, Horizontal, "Line edits", parent, name )
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{
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<a href="ntqframe.html#setMargin">setMargin</a>( 10 );
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<a href="qvboxlayout.html">TQVBoxLayout</a>* box = new <a href="qvboxlayout.html">TQVBoxLayout</a>( <a href="ntqwidget.html#layout">layout</a>() );
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<a href="qhboxlayout.html">TQHBoxLayout</a> *row1 = new <a href="qhboxlayout.html">TQHBoxLayout</a>( box );
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<a name="x173"></a> row1-><a href="ntqlayout.html#setMargin">setMargin</a>( 5 );
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// Create a Label
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<a href="ntqlabel.html">TQLabel</a>* label = new <a href="ntqlabel.html">TQLabel</a>( "Echo Mode: ", this);
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<a name="x169"></a> row1-><a href="qboxlayout.html#addWidget">addWidget</a>( label );
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// Create a Combobox with three items...
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combo1 = new <a href="ntqcombobox.html">TQComboBox</a>( FALSE, this );
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row1-><a href="qboxlayout.html#addWidget">addWidget</a>( combo1 );
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<a name="x171"></a> combo1-><a href="ntqcombobox.html#insertItem">insertItem</a>( "Normal" );
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combo1-><a href="ntqcombobox.html#insertItem">insertItem</a>( "Password" );
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combo1-><a href="ntqcombobox.html#insertItem">insertItem</a>( "No Echo" );
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// ...and connect the activated() TQ_SIGNAL with the slotEchoChanged() TQ_SLOT to be able
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// to react when an item is selected
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<a name="x170"></a> <a href="ntqobject.html#connect">connect</a>( combo1, TQ_SIGNAL( <a href="ntqcombobox.html#activated">activated</a>( int ) ), this, TQ_SLOT( slotEchoChanged( int ) ) );
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// insert the first LineEdit
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lined1 = new <a href="ntqlineedit.html">TQLineEdit</a>( this );
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box-><a href="qboxlayout.html#addWidget">addWidget</a>( lined1 );
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// another widget which is used for layouting
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<a href="qhboxlayout.html">TQHBoxLayout</a> *row2 = new <a href="qhboxlayout.html">TQHBoxLayout</a>( box );
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row2-><a href="ntqlayout.html#setMargin">setMargin</a>( 5 );
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// and the second label
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label = new <a href="ntqlabel.html">TQLabel</a>( "Validator: ", this );
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row2-><a href="qboxlayout.html#addWidget">addWidget</a>( label );
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// A second Combobox with again three items...
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combo2 = new <a href="ntqcombobox.html">TQComboBox</a>( FALSE, this );
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row2-><a href="qboxlayout.html#addWidget">addWidget</a>( combo2 );
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combo2-><a href="ntqcombobox.html#insertItem">insertItem</a>( "No Validator" );
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combo2-><a href="ntqcombobox.html#insertItem">insertItem</a>( "Integer Validator" );
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combo2-><a href="ntqcombobox.html#insertItem">insertItem</a>( "Double Validator" );
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// ...and again the activated() TQ_SIGNAL gets connected with a TQ_SLOT
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<a href="ntqobject.html#connect">connect</a>( combo2, TQ_SIGNAL( <a href="ntqcombobox.html#activated">activated</a>( int ) ), this, TQ_SLOT( slotValidatorChanged( int ) ) );
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// and the second LineEdit
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lined2 = new <a href="ntqlineedit.html">TQLineEdit</a>( this );
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box-><a href="qboxlayout.html#addWidget">addWidget</a>( lined2 );
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// yet another widget which is used for layouting
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<a href="qhboxlayout.html">TQHBoxLayout</a> *row3 = new <a href="qhboxlayout.html">TQHBoxLayout</a>( box );
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row3-><a href="ntqlayout.html#setMargin">setMargin</a>( 5 );
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// we need a label for this too
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label = new <a href="ntqlabel.html">TQLabel</a>( "Alignment: ", this );
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row3-><a href="qboxlayout.html#addWidget">addWidget</a>( label );
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// A combo box for setting alignment
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combo3 = new <a href="ntqcombobox.html">TQComboBox</a>( FALSE, this );
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row3-><a href="qboxlayout.html#addWidget">addWidget</a>( combo3 );
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combo3-><a href="ntqcombobox.html#insertItem">insertItem</a>( "Left" );
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combo3-><a href="ntqcombobox.html#insertItem">insertItem</a>( "Centered" );
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combo3-><a href="ntqcombobox.html#insertItem">insertItem</a>( "Right" );
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// ...and again the activated() TQ_SIGNAL gets connected with a TQ_SLOT
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<a href="ntqobject.html#connect">connect</a>( combo3, TQ_SIGNAL( <a href="ntqcombobox.html#activated">activated</a>( int ) ), this, TQ_SLOT( slotAlignmentChanged( int ) ) );
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// and the third lineedit
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lined3 = new <a href="ntqlineedit.html">TQLineEdit</a>( this );
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box-><a href="qboxlayout.html#addWidget">addWidget</a>( lined3 );
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// exactly the same for the fourth
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<a href="qhboxlayout.html">TQHBoxLayout</a> *row4 = new <a href="qhboxlayout.html">TQHBoxLayout</a>( box );
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row4-><a href="ntqlayout.html#setMargin">setMargin</a>( 5 );
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// we need a label for this too
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label = new <a href="ntqlabel.html">TQLabel</a>( "Input mask: ", this );
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row4-><a href="qboxlayout.html#addWidget">addWidget</a>( label );
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// A combo box for choosing an input mask
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combo4 = new <a href="ntqcombobox.html">TQComboBox</a>( FALSE, this );
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row4-><a href="qboxlayout.html#addWidget">addWidget</a>( combo4 );
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combo4-><a href="ntqcombobox.html#insertItem">insertItem</a>( "No mask" );
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combo4-><a href="ntqcombobox.html#insertItem">insertItem</a>( "Phone number" );
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combo4-><a href="ntqcombobox.html#insertItem">insertItem</a>( "ISO date" );
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combo4-><a href="ntqcombobox.html#insertItem">insertItem</a>( "License key" );
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// ...this time we use the activated( const <a href="ntqstring.html">TQString</a> & ) signal
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<a href="ntqobject.html#connect">connect</a>( combo4, TQ_SIGNAL( <a href="ntqcombobox.html#activated">activated</a>( int ) ),
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this, TQ_SLOT( slotInputMaskChanged( int ) ) );
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// and the fourth lineedit
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lined4 = new <a href="ntqlineedit.html">TQLineEdit</a>( this );
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box-><a href="qboxlayout.html#addWidget">addWidget</a>( lined4 );
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// last widget used for layouting
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<a href="ntqhbox.html">TQHBox</a> *row5 = new <a href="ntqhbox.html">TQHBox</a>( this );
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box-><a href="qboxlayout.html#addWidget">addWidget</a>( row5 );
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row5-><a href="ntqframe.html#setMargin">setMargin</a>( 5 );
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// last label
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(void)new <a href="ntqlabel.html">TQLabel</a>( "Read-Only: ", row5 );
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// A combo box for setting alignment
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combo5 = new <a href="ntqcombobox.html">TQComboBox</a>( FALSE, row5 );
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combo5-><a href="ntqcombobox.html#insertItem">insertItem</a>( "False" );
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combo5-><a href="ntqcombobox.html#insertItem">insertItem</a>( "True" );
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// ...and again the activated() TQ_SIGNAL gets connected with a TQ_SLOT
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<a href="ntqobject.html#connect">connect</a>( combo5, TQ_SIGNAL( <a href="ntqcombobox.html#activated">activated</a>( int ) ), this, TQ_SLOT( slotReadOnlyChanged( int ) ) );
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// and the last lineedit
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lined5 = new <a href="ntqlineedit.html">TQLineEdit</a>( this );
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box-><a href="qboxlayout.html#addWidget">addWidget</a>( lined5 );
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// give the first LineEdit the focus at the beginning
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<a name="x181"></a> lined1-><a href="ntqwidget.html#setFocus">setFocus</a>();
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}
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/*
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* TQ_SLOT slotEchoChanged( int i )
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*
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* i contains the number of the item which the user has been chosen in the
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* first Combobox. According to this value, we set the Echo-Mode for the
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* first LineEdit.
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*/
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void <a name="f220"></a>LineEdits::slotEchoChanged( int i )
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{
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switch ( i ) {
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case 0:
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<a name="x176"></a> lined1-><a href="ntqlineedit.html#setEchoMode">setEchoMode</a>( TQLineEdit::Normal );
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break;
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case 1:
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lined1-><a href="ntqlineedit.html#setEchoMode">setEchoMode</a>( TQLineEdit::Password );
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break;
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case 2:
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lined1-><a href="ntqlineedit.html#setEchoMode">setEchoMode</a>( TQLineEdit::NoEcho );
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break;
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}
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lined1-><a href="ntqwidget.html#setFocus">setFocus</a>();
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}
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/*
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* TQ_SLOT slotValidatorChanged( int i )
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*
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* i contains the number of the item which the user has been chosen in the
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* second Combobox. According to this value, we set a validator for the
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* second LineEdit. A validator checks in a LineEdit each character which
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* the user enters and accepts it if it is valid, else the character gets
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* ignored and not inserted into the lineedit.
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*/
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void <a name="f221"></a>LineEdits::slotValidatorChanged( int i )
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{
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switch ( i ) {
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case 0:
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<a name="x180"></a> lined2-><a href="ntqlineedit.html#setValidator">setValidator</a>( 0 );
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break;
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case 1:
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lined2-><a href="ntqlineedit.html#setValidator">setValidator</a>( new <a href="qintvalidator.html">TQIntValidator</a>( lined2 ) );
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break;
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case 2:
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lined2-><a href="ntqlineedit.html#setValidator">setValidator</a>( new <a href="qdoublevalidator.html">TQDoubleValidator</a>( -999.0, 999.0, 2,
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lined2 ) );
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break;
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}
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<a name="x179"></a> lined2-><a href="ntqlineedit.html#setText">setText</a>( "" );
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lined2-><a href="ntqwidget.html#setFocus">setFocus</a>();
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}
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/*
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* TQ_SLOT slotAlignmentChanged( int i )
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*
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* i contains the number of the item which the user has been chosen in
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* the third Combobox. According to this value, we set an alignment
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* third LineEdit.
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*/
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void <a name="f222"></a>LineEdits::slotAlignmentChanged( int i )
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{
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switch ( i ) {
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case 0:
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<a name="x174"></a> lined3-><a href="ntqlineedit.html#setAlignment">setAlignment</a>( TQLineEdit::AlignLeft );
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break;
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case 1:
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lined3-><a href="ntqlineedit.html#setAlignment">setAlignment</a>( TQLineEdit::AlignCenter );
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break;
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case 2:
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lined3-><a href="ntqlineedit.html#setAlignment">setAlignment</a>( TQLineEdit::AlignRight );
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break;
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}
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lined3-><a href="ntqwidget.html#setFocus">setFocus</a>();
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}
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/*
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* TQ_SLOT slotInputMaskChanged( const <a href="ntqstring.html">TQString</a> &mask )
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*
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* i contains the number of the item which the user has been chosen in
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* the third Combobox. According to this value, we set an input mask on
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* third LineEdit.
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*/
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void <a name="f223"></a>LineEdits::slotInputMaskChanged( int i )
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{
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switch( i ) {
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case 0:
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<a name="x177"></a> lined4-><a href="ntqlineedit.html#setInputMask">setInputMask</a>( <a href="ntqstring.html#TQString-null">TQString::null</a> );
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break;
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case 1:
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lined4-><a href="ntqlineedit.html#setInputMask">setInputMask</a>( "+99 99 99 99 99;_" );
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break;
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case 2:
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lined4-><a href="ntqlineedit.html#setInputMask">setInputMask</a>( "0000-00-00" );
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lined4-><a href="ntqlineedit.html#setText">setText</a>( "00000000" );
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<a name="x175"></a> lined4-><a href="ntqlineedit.html#setCursorPosition">setCursorPosition</a>( 0 );
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break;
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case 3:
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lined4-><a href="ntqlineedit.html#setInputMask">setInputMask</a>( ">AAAAA-AAAAA-AAAAA-AAAAA-AAAAA;#" );
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break;
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}
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lined4-><a href="ntqwidget.html#setFocus">setFocus</a>();
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}
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/*
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* TQ_SLOT slotReadOnlyChanged( int i )
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*
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* i contains the number of the item which the user has been chosen in
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* the fourth Combobox. According to this value, we toggle read-only.
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*/
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void <a name="f224"></a>LineEdits::slotReadOnlyChanged( int i )
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{
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switch ( i ) {
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case 0:
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<a name="x178"></a> lined5-><a href="ntqlineedit.html#setReadOnly">setReadOnly</a>( FALSE );
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break;
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case 1:
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lined5-><a href="ntqlineedit.html#setReadOnly">setReadOnly</a>( TRUE );
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break;
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}
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lined5-><a href="ntqwidget.html#setFocus">setFocus</a>();
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}
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</pre>
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<p> <hr>
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<p> Main:
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<p> <pre>/****************************************************************************
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** $Id: qt/main.cpp 3.3.8 edited Jan 11 14:37 $
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**
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** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
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**
|
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** This file is part of an example program for TQt. This example
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|
** program may be used, distributed and modified without limitation.
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**
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*****************************************************************************/
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#include "lineedits.h"
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#include <<a href="qapplication-h.html">ntqapplication.h</a>>
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int main( int argc, char **argv )
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{
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<a href="ntqapplication.html">TQApplication</a> a( argc, argv );
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LineEdits lineedits;
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lineedits.<a href="ntqwidget.html#setCaption">setCaption</a>( "TQt Example - Lineedits" );
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a.<a href="ntqapplication.html#setMainWidget">setMainWidget</a>( &lineedits );
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lineedits.<a href="ntqwidget.html#show">show</a>();
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return a.<a href="ntqapplication.html#exec">exec</a>();
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}
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</pre>
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<p>See also <a href="examples.html">Examples</a>.
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<!-- eof -->
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<p><address><hr><div align=center>
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<table width=100% cellspacing=0 border=0><tr>
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<td>Copyright © 2007
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<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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<td align=right><div align=right>TQt 3.3.8</div>
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</table></div></address></body>
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</html>
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