1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
/****************************************************************
**
** Qt tutorial 6
**
****************************************************************/
#include <qapplication.h>
#include <qpushbutton.h>
#include <qslider.h>
#include <qlcdnumber.h>
#include <qfont.h>
#include <qvbox.h>
#include <qgrid.h>
class LCDRange : public QVBox
{
public:
LCDRange( QWidget *parent=0, const char *name=0 );
};
LCDRange::LCDRange( QWidget *parent, const char *name )
: QVBox( parent, name )
{
QLCDNumber *lcd = new QLCDNumber( 2, this, "lcd" );
QSlider * slider = new QSlider( Horizontal, this, "slider" );
slider->setRange( 0, 99 );
slider->setValue( 0 );
connect( slider, SIGNAL(valueChanged(int)), lcd, SLOT(display(int)) );
}
class MyWidget : public QVBox
{
public:
MyWidget( QWidget *parent=0, const char *name=0 );
};
MyWidget::MyWidget( QWidget *parent, const char *name )
: QVBox( parent, name )
{
QPushButton *quit = new QPushButton( "Quit", this, "quit" );
quit->setFont( QFont( "Times", 18, QFont::Bold ) );
connect( quit, SIGNAL(clicked()), qApp, SLOT(quit()) );
QGrid *grid = new QGrid( 4, this );
for( int c = 0 ; c < 4 ; c++ )
for( int r = 0 ; r < 4 ; r++ )
(void)new LCDRange( grid );
}
int main( int argc, char **argv )
{
QApplication a( argc, argv );
MyWidget w;
a.setMainWidget( &w );
w.show();
return a.exec();
}
|
