From bd0f3345a938b35ce6a12f6150373b0955b8dd12 Mon Sep 17 00:00:00 2001 From: Timothy Pearson Date: Sun, 10 Jul 2011 15:24:15 -0500 Subject: Add Qt3 development HEAD version --- doc/html/lineedits-example.html | 394 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 394 insertions(+) create mode 100644 doc/html/lineedits-example.html (limited to 'doc/html/lineedits-example.html') diff --git a/doc/html/lineedits-example.html b/doc/html/lineedits-example.html new file mode 100644 index 0000000..c9a2a5a --- /dev/null +++ b/doc/html/lineedits-example.html @@ -0,0 +1,394 @@ + + + + + +Line Edits + + + + + + + +

Line Edits

+ + +

+This example shows how to work with single lineedit widgets, and +how to use different echo modes and validators. +

Header file: +

/****************************************************************************
+** $Id: qt/lineedits.h   3.3.8   edited Jan 11 14:37 $
+**
+** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
+**
+** This file is part of an example program for Qt.  This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+#ifndef LINEDITS_H
+#define LINEDITS_H
+
+#include <qgroupbox.h>
+
+class QLineEdit;
+class QComboBox;
+
+class LineEdits : public QGroupBox
+{
+    Q_OBJECT
+
+public:
+    LineEdits( QWidget *parent = 0, const char *name = 0 );
+
+protected:
+    QLineEdit *lined1, *lined2, *lined3, *lined4, *lined5;
+    QComboBox *combo1, *combo2, *combo3, *combo4, *combo5;
+
+protected slots:
+    void slotEchoChanged( int );
+    void slotValidatorChanged( int );
+    void slotAlignmentChanged( int );
+    void slotInputMaskChanged( int );
+    void slotReadOnlyChanged( int );
+};
+
+#endif
+

+ +

Implementation: +

/****************************************************************************
+** $Id: qt/lineedits.cpp   3.3.8   edited Jan 11 14:37 $
+**
+** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
+**
+** This file is part of an example program for Qt.  This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+#include "lineedits.h"
+
+#include <qlineedit.h>
+#include <qcombobox.h>
+#include <qframe.h>
+#include <qvalidator.h>
+#include <qlabel.h>
+#include <qlayout.h>
+#include <qhbox.h>
+
+/*
+ * Constructor
+ *
+ * Creates child widgets of the LineEdits widget
+ */
+
+LineEdits::LineEdits( QWidget *parent, const char *name )
+    : QGroupBox( 0, Horizontal, "Line edits", parent, name )
+{
+    setMargin( 10 );
+
+    QVBoxLayout* box = new QVBoxLayout( layout() );
+
+    QHBoxLayout *row1 = new QHBoxLayout( box );
+    row1->setMargin( 5 );
+
+    // Create a Label
+    QLabel* label = new QLabel( "Echo Mode: ", this);
+    row1->addWidget( label );
+
+    // Create a Combobox with three items...
+    combo1 = new QComboBox( FALSE, this );
+    row1->addWidget( combo1 );
+    combo1->insertItem( "Normal" );
+    combo1->insertItem( "Password" );
+    combo1->insertItem( "No Echo" );
+    // ...and connect the activated() SIGNAL with the slotEchoChanged() SLOT to be able
+    // to react when an item is selected
+    connect( combo1, SIGNAL( activated( int ) ), this, SLOT( slotEchoChanged( int ) ) );
+
+    // insert the first LineEdit
+    lined1 = new QLineEdit( this );
+    box->addWidget( lined1 );
+
+    // another widget which is used for layouting
+    QHBoxLayout *row2 = new QHBoxLayout( box );
+    row2->setMargin( 5 );
+
+    // and the second label
+    label = new QLabel( "Validator: ", this );
+    row2->addWidget( label );
+
+    // A second Combobox with again three items...
+    combo2 = new QComboBox( FALSE, this );
+    row2->addWidget( combo2 );
+    combo2->insertItem( "No Validator" );
+    combo2->insertItem( "Integer Validator" );
+    combo2->insertItem( "Double Validator" );
+    // ...and again the activated() SIGNAL gets connected with a SLOT
+    connect( combo2, SIGNAL( activated( int ) ), this, SLOT( slotValidatorChanged( int ) ) );
+
+    // and the second LineEdit
+    lined2 = new QLineEdit( this );
+    box->addWidget( lined2 );
+
+    // yet another widget which is used for layouting
+    QHBoxLayout *row3 = new QHBoxLayout( box );
+    row3->setMargin( 5 );
+
+    // we need a label for this too
+    label = new QLabel( "Alignment: ", this );
+    row3->addWidget( label );
+
+    // A combo box for setting alignment
+    combo3 = new QComboBox( FALSE, this );
+    row3->addWidget( combo3 );
+    combo3->insertItem( "Left" );
+    combo3->insertItem( "Centered" );
+    combo3->insertItem( "Right" );
+    // ...and again the activated() SIGNAL gets connected with a SLOT
+    connect( combo3, SIGNAL( activated( int ) ), this, SLOT( slotAlignmentChanged( int ) ) );
+
+    // and the third lineedit
+    lined3 = new QLineEdit( this );
+    box->addWidget( lined3 );
+
+    // exactly the same for the fourth
+    QHBoxLayout *row4 = new QHBoxLayout( box );
+    row4->setMargin( 5 );
+
+    // we need a label for this too
+    label = new QLabel( "Input mask: ", this );
+    row4->addWidget( label );
+
+    // A combo box for choosing an input mask
+    combo4 = new QComboBox( FALSE, this );
+    row4->addWidget( combo4 );
+    combo4->insertItem( "No mask" );
+    combo4->insertItem( "Phone number" );
+    combo4->insertItem( "ISO date" );
+    combo4->insertItem( "License key" );
+
+    // ...this time we use the activated( const QString & ) signal
+    connect( combo4, SIGNAL( activated( int ) ),
+             this, SLOT( slotInputMaskChanged( int ) ) );
+
+    // and the fourth lineedit
+    lined4 = new QLineEdit( this );
+    box->addWidget( lined4 );
+
+    // last widget used for layouting
+    QHBox *row5 = new QHBox( this );
+    box->addWidget( row5 );
+    row5->setMargin( 5 );
+
+    // last label
+    (void)new QLabel( "Read-Only: ", row5 );
+
+    // A combo box for setting alignment
+    combo5 = new QComboBox( FALSE, row5 );
+    combo5->insertItem( "False" );
+    combo5->insertItem( "True" );
+    // ...and again the activated() SIGNAL gets connected with a SLOT
+    connect( combo5, SIGNAL( activated( int ) ), this, SLOT( slotReadOnlyChanged( int ) ) );
+
+    // and the last lineedit
+    lined5 = new QLineEdit( this );
+    box->addWidget( lined5 );
+
+    // give the first LineEdit the focus at the beginning
+    lined1->setFocus();
+}
+
+/*
+ * SLOT slotEchoChanged( int i )
+ *
+ * i contains the number of the item which the user has been chosen in the
+ * first Combobox. According to this value, we set the Echo-Mode for the
+ * first LineEdit.
+ */
+
+void LineEdits::slotEchoChanged( int i )
+{
+    switch ( i ) {
+    case 0:
+        lined1->setEchoMode( QLineEdit::Normal );
+        break;
+    case 1:
+        lined1->setEchoMode( QLineEdit::Password );
+        break;
+    case 2:
+        lined1->setEchoMode( QLineEdit::NoEcho );
+        break;
+    }
+
+    lined1->setFocus();
+}
+
+/*
+ * SLOT slotValidatorChanged( int i )
+ *
+ * i contains the number of the item which the user has been chosen in the
+ * second Combobox. According to this value, we set a validator for the
+ * second LineEdit. A validator checks in a LineEdit each character which
+ * the user enters and accepts it if it is valid, else the character gets
+ * ignored and not inserted into the lineedit.
+ */
+
+void LineEdits::slotValidatorChanged( int i )
+{
+    switch ( i ) {
+    case 0:
+        lined2->setValidator( 0 );
+        break;
+    case 1:
+        lined2->setValidator( new QIntValidator( lined2 ) );
+        break;
+    case 2:
+        lined2->setValidator( new QDoubleValidator( -999.0, 999.0, 2,
+                                                    lined2 ) );
+        break;
+    }
+
+    lined2->setText( "" );
+    lined2->setFocus();
+}
+
+
+/*
+ * SLOT slotAlignmentChanged( int i )
+ *
+ * i contains the number of the item which the user has been chosen in
+ * the third Combobox.  According to this value, we set an alignment
+ * third LineEdit.
+ */
+
+void LineEdits::slotAlignmentChanged( int i )
+{
+    switch ( i ) {
+    case 0:
+        lined3->setAlignment( QLineEdit::AlignLeft );
+        break;
+    case 1:
+        lined3->setAlignment( QLineEdit::AlignCenter );
+        break;
+    case 2:
+        lined3->setAlignment( QLineEdit::AlignRight );
+        break;
+    }
+
+    lined3->setFocus();
+}
+
+/*
+ * SLOT slotInputMaskChanged( const QString &mask )
+ *
+ * i contains the number of the item which the user has been chosen in
+ * the third Combobox.  According to this value, we set an input mask on
+ * third LineEdit.
+ */
+
+void LineEdits::slotInputMaskChanged( int i )
+{
+    switch( i ) {
+    case 0:
+        lined4->setInputMask( QString::null );
+        break;
+    case 1:
+        lined4->setInputMask( "+99 99 99 99 99;_" );
+        break;
+    case 2:
+        lined4->setInputMask( "0000-00-00" );
+        lined4->setText( "00000000" );
+        lined4->setCursorPosition( 0 );
+        break;
+    case 3:
+        lined4->setInputMask( ">AAAAA-AAAAA-AAAAA-AAAAA-AAAAA;#" );
+        break;
+    }
+    lined4->setFocus();
+}
+
+/*
+ * SLOT slotReadOnlyChanged( int i )
+ *
+ * i contains the number of the item which the user has been chosen in
+ * the fourth Combobox.  According to this value, we toggle read-only.
+ */
+
+void LineEdits::slotReadOnlyChanged( int i )
+{
+    switch ( i ) {
+    case 0:
+        lined5->setReadOnly( FALSE );
+        break;
+    case 1:
+        lined5->setReadOnly( TRUE );
+        break;
+    }
+
+    lined5->setFocus();
+}
+
+

+ +

Main: +

/****************************************************************************
+** $Id: qt/main.cpp   3.3.8   edited Jan 11 14:37 $
+**
+** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
+**
+** This file is part of an example program for Qt.  This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+#include "lineedits.h"
+#include <qapplication.h>
+
+int main( int argc, char **argv )
+{
+    QApplication a( argc, argv );
+
+    LineEdits lineedits;
+    lineedits.setCaption( "Qt Example - Lineedits" );
+    a.setMainWidget( &lineedits );
+    lineedits.show();
+
+    return a.exec();
+}
+

+ +