rangecontrol.cpp

《Linux程序设计权威指南》一书qt下的源码

#include "rangecontrol.h"
#include <qhbox.h>
#include <qlcdnumber.h>
#include <qspinbox.h>
#include <qlabel.h>
#include <qstring.h>
#include <qslider.h>
#include <qcheckbox.h>
#include <qtextcodec.h>

#include <limits.h>

RangeControlDemo::RangeControlDemo( QWidget *parent, const char *name )
    : QVBox( parent, name )
{
	QHBox *row1 = new QHBox( this );

	QVBox *cell2 = new QVBox( row1 );
	cell2->setMargin( 10 );
	cell2->setFrameStyle( QFrame::WinPanel | QFrame::Sunken );

	(void)new QWidget( cell2 );

	QLabel *label1 = new QLabel( tr( "输入在%1和%2之间的数值:" ).arg( -INT_MAX ).arg( INT_MAX ), cell2 );
	label1->setMaximumHeight( label1->sizeHint().height() );
	QSpinBox *sb1 = new QSpinBox( -INT_MAX, INT_MAX, 1, cell2 );
	sb1->setValue( 0 );

	QLabel *label2 = new QLabel( tr("输入缩放值:"), cell2 );
	label2->setMaximumHeight( label2->sizeHint().height() );
	QSpinBox *sb2 = new QSpinBox( 0, 1000, 10, cell2 );
	sb2->setSuffix( " %" );
	sb2->setSpecialValueText( tr("自动的") );

	QLabel *label3 = new QLabel( tr("输入价格:"), cell2 );
	label3->setMaximumHeight( label3->sizeHint().height() );
	QSpinBox *sb3 = new QSpinBox( 0, INT_MAX, 1, cell2 );
	sb3->setPrefix( tr("人民币 ") );
	sb3->setSuffix( tr(" 元") );
	sb3->setValue( 355 );
	
	(void)new QWidget( cell2 );

	QHBox *row2 = new QHBox( this );

	QVBox *cell3 = new QVBox( row2 );
	cell3->setMargin( 10 );
	cell3->setFrameStyle( QFrame::WinPanel | QFrame::Sunken );
	QSlider *hslider = new QSlider( 0, 64, 1, 33, Qt::Horizontal, cell3 );
	QLCDNumber *lcd2 = new QLCDNumber( 2, cell3 );
	lcd2->display( 33 );
	//lcd2->setSegmentStyle( QLCDNumber::Filled );
	connect( hslider, SIGNAL( valueChanged( int ) ), lcd2, SLOT( display( int ) ) );

	QHBox *cell4 = new QHBox( row2 );
	cell4->setFrameStyle( QFrame::WinPanel | QFrame::Sunken );
	cell4->setMargin( 10 );
	QSlider *vslider = new QSlider( 0, 100, 1, 8, Qt::Vertical, cell4 );
	QLCDNumber *lcd3 = new QLCDNumber( 3, cell4 );
	lcd3->display( 8 );
	connect( vslider, SIGNAL( valueChanged( int ) ), lcd3, SLOT( display( int ) ) );
}