/**************************************************************************** ** $Id: lineedits.h,v 1.2 1999/06/09 03:54:15 agulbra Exp $ ** ** Copyright (C) 1992-1999 Troll Tech AS. 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 <qvbox.h> class QLineEdit; class QComboBox; class LineEdits : public QVBox { Q_OBJECT public: LineEdits( QWidget *parent = 0, const char *name = 0 ); protected: QLineEdit *lined1, *lined2, *lined3; QComboBox *combo1, *combo2, *combo3; protected slots: void slotEchoChanged( int ); void slotValidatorChanged( int ); void slotAlignmentChanged( int ); }; #endif
/**************************************************************************** ** $Id: lineedits.cpp,v 1.3.2.1 1999/09/01 06:19:52 aavit Exp $ ** ** Copyright (C) 1992-1999 Troll Tech AS. 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 <qhbox.h> /* * Constructor * * Creates child widgets of the LineEdits widget */ LineEdits::LineEdits( QWidget *parent, const char *name ) : QVBox( parent, name ) { setMargin( 10 ); // Widget for layouting QHBox *row1 = new QHBox( this ); row1->setMargin( 5 ); // Create a Label (void)new QLabel( "Echo Mode: ", row1 ); // Create a Combobox with three items... combo1 = new QComboBox( FALSE, row1 ); combo1->insertItem( "Normal", -1 ); combo1->insertItem( "Password", -1 ); combo1->insertItem( "No Echo", -1 ); // ...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 ); // another widget which is used for layouting QHBox *row2 = new QHBox( this ); row2->setMargin( 5 ); // and the second label (void)new QLabel( "Validator: ", row2 ); // A second Combobox with again three items... combo2 = new QComboBox( FALSE, row2 ); combo2->insertItem( "No Validator", -1 ); combo2->insertItem( "Integer Validator", -1 ); combo2->insertItem( "Double Validator", -1 ); // ...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 ); // yet another widget which is used for layouting QHBox *row3 = new QHBox( this ); row3->setMargin( 5 ); // we need a label for this too (void)new QLabel( "Alignment: ", row3 ); // A combo box for setting alignment combo3 = new QComboBox( FALSE, row3 ); combo3->insertItem( "Left", -1 ); combo3->insertItem( "Centered", -1 ); combo3->insertItem( "Right", -1 ); // ...and again the activated() SIGNAL gets connected with a SLOT connect( combo3, SIGNAL( activated( int ) ), this, SLOT( slotAlignmentChanged( int ) ) ); // and the lineedit lined3 = new QLineEdit( this ); // 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 second 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(); }
/**************************************************************************** ** $Id: main.cpp,v 1.1 1999/06/03 10:19:07 warwick Exp $ ** ** Copyright (C) 1992-1999 Troll Tech AS. 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.resize( 400, lineedits.sizeHint().height() ); lineedits.setCaption( "LineEdit Examples" ); a.setMainWidget( &lineedits ); lineedits.show(); return a.exec(); }
Copyright © 1999 Troll Tech | Trademarks | Qt version 2.0.2
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