What is wrong with this simple example ?

[sunil.thaha]

I dont think thats the case...
and I even dont think this is a simple example...
I tried the code too, (VC++ 6.0 )but it is giving the following errors :

I think you shouldn't think too much, and just try out the solution mentioned

#include <QApplication>
#include <QFont>
#include <QPushButton>
#include <QWidget>
#include <QCalendarWidget>
#include <QVBoxLayout>
#include <iostream>
 
class MyWidget : public QWidget
{
Q_OBJECT
 
public:
MyWidget(QWidget *parent = 0) ;
 
public slots:
void calClicked ( const QDate & ) ;
} ;
 
void MyWidget::calClicked ( const QDate & theDate )
{   std::cout << theDate.toString( "ddd MMMM d yyyy" ).toStdString() << std::endl ;
}
 
MyWidget::MyWidget ( QWidget *parent ) : QWidget ( parent )
{
QPushButton *quit = new QPushButton ( tr ( "Quit" ), this ) ;
quit->setGeometry ( 62, 40, 75, 30 ) ;
quit->setFont ( QFont( "Times", 18, QFont::Bold ) ) ;
connect ( quit, SIGNAL( clicked() ), qApp, SLOT(quit()) ) ;
 
QCalendarWidget *dateEdit = new QCalendarWidget () ;
connect ( dateEdit, SIGNAL( clicked(const QDate&) ), this, SLOT(calClicked(const QDate&)) ) ;
 
QVBoxLayout *layout = new QVBoxLayout;
layout->addWidget(dateEdit);
layout->addWidget(quit);
setLayout(layout);
 
}
 
int main(int argc, char* argv[] )
{
QApplication app(argc, argv ) ;
MyWidget widget ;
widget.show() ;
return app.exec() ;
} 
 
#include "main.moc"

#include <QApplication>
#include <QFont>
#include <QPushButton>
#include <QWidget>
#include <QCalendarWidget>
#include <QVBoxLayout>
#include <iostream>

class MyWidget : public QWidget
{
Q_OBJECT

public:
MyWidget(QWidget *parent = 0) ;

public slots:
void calClicked ( const QDate & ) ;
} ;

void MyWidget::calClicked ( const QDate & theDate )
{   std::cout << theDate.toString( "ddd MMMM d yyyy" ).toStdString() << std::endl ;
}

MyWidget::MyWidget ( QWidget *parent ) : QWidget ( parent )
{
QPushButton *quit = new QPushButton ( tr ( "Quit" ), this ) ;
quit->setGeometry ( 62, 40, 75, 30 ) ;
quit->setFont ( QFont( "Times", 18, QFont::Bold ) ) ;
connect ( quit, SIGNAL( clicked() ), qApp, SLOT(quit()) ) ;

QCalendarWidget *dateEdit = new QCalendarWidget () ;
connect ( dateEdit, SIGNAL( clicked(const QDate&) ), this, SLOT(calClicked(const QDate&)) ) ;

QVBoxLayout *layout = new QVBoxLayout;
layout->addWidget(dateEdit);
layout->addWidget(quit);
setLayout(layout);

}

int main(int argc, char* argv[] )
{
QApplication app(argc, argv ) ;
MyWidget widget ;
widget.show() ;
return app.exec() ;
} 

#include "main.moc"

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Try this code out It should compile

[aamer4yu]

ok I am not thinking much now..
can u tell more ? how does moc work ?
if main.moc was not included, main_moc.cpp might have been generated ? hope I am right... are there any other files generated ??

how do one choose to what to include? ?

[ChristianEhrlicher]

As you can moc can work on a source and on a header file. For a beginner it's imo better to just use the header-file approach.
moc on src file creates a <filename>.moc which has to be included in <filename>.cpp
moc on header file creates moc_<filename>.cpp which is automagically added to the sourcefile-list by qmake.

Be aware that cmake & automake use a different naming sheme (and you have to include moc src and moc header - it's not done by the buildsystem there)

[igor]

Thanks. That did it .