main.cpp

我在我的EP9315上写的两个QT程序

#include <qapplication.h>
#include <qpushbutton.h>
#include <qlcdnumber.h>
#include <qfont.h>
#include <qlayout.h>

#include "lcdrange.h"
#include "cannon.h"

class MyWidget: public QWidget
{
public:
  MyWidget( QWidget *parent=0,const char *name=0 );
};

MyWidget::MyWidget( QWidget *parent, const char *name)
        :QWidget( parent, name)
{
  QPushButton *quit =new QPushButton("Quit",this,"quit");
  quit->setFont( QFont( "Times",18,QFont::Bold) );

  
  QPushButton *set =new QPushButton("Set",this,"set");
  set->setFont( QFont( "Times",18,QFont::Bold) );
  
   
  QPushButton *simu =new QPushButton("Simu",this,"simulate");
  simu->setFont( QFont( "Times",18,QFont::Bold) );

  connect(quit,SIGNAL(clicked()),qApp,SLOT(quit()) );
  
    
  LCDRange *angle = new LCDRange( this, "angle" );
  angle->setRange( 5, 70);

  CannonField *cannonField
     =new CannonField(this,"cannonField" );

  connect(set,SIGNAL(clicked()),cannonField,SLOT(paintSet()) );
  
  connect(simu,SIGNAL(clicked()),cannonField,SLOT(simulate()) );
  
  connect( angle, SIGNAL(valueChanged(int)),cannonField,SLOT(setAngle(int)) );
  connect(cannonField,SIGNAL(angleChanged(int)),angle,SLOT(setValue(int))); 
  //QGridLayout *grid = new QGridLayout( this, 2,2,10);
  QGridLayout *grid = new QGridLayout( this,2,2,10);
  grid->addWidget( quit, 0, 0 );
 // grid->addWidget(angle,1, 0, Qt::AlignTop );
  grid->addWidget(cannonField, 1, 1);
  grid->setColStretch( 1, 10 );
 // grid->setColStretch( 0, 10 );
  
  QVBoxLayout *leftBox = new QVBoxLayout;
  grid->addLayout( leftBox, 1, 0 );
  leftBox->addWidget( angle );
  leftBox->addWidget( set );
  leftBox->addWidget( simu );

  angle->setValue( 30 );
  angle->setFocus();
}

int main( int argc, char **argv )
{
  QApplication a( argc, argv );
  MyWidget w;
  w.setGeometry( 20, 20, 200, 200 );
  a.setMainWidget( &w );
  w.show();
  return a.exec();
}