[Chicken-users] Problems with pointers to c++ objects

[Petter Egesund]

Hi;

I have followed Felix' good example, and used the Qt-examples as a tutorial 
for using C++ objects from Scheme.

But I have problems with functions defined like this;

QFont (const QString &, int pointSize, int weight, bool italic);

They need the pointer to a created object, rather than the object itself.

I have looked through the mailing list, but my failed attempt to create a 
pointer to a font-object does not seem to work.

Any clues on this one?


Cheers,

Petter Egesund

----


My program looks like this:

; Include into generated code, but don't parse:
#>
#include <qapplication.h>
#include <qpushbutton.h>
#include <qfont.h>
#include <qvbox.h>
<#

; Parse but don't embed: we only want wrappers for a few classes:
#>?

class QString
{
public:
        QString (const char *);
        ~QString();
};


class QFont
{
public:
        QFont (const QString &, int pointSize, int weight, bool italic);
        ~QFont();
};

class QObject
{
public:
 bool connect(const QObject *, const char *, const char *) const;
};



class QWidget
{
public:
 void resize(int, int);
 void show();
 void setFont (const QFont &);
};

class QApplication : QObject
{
public:
 QApplication(int, char **);
 ~QApplication();
 void setMainWidget(QWidget *);
 void exec();
};

class QPushButton : public QWidget
{
public:
 QPushButton(char *, QWidget *);
 ~QPushButton();
 bool connect(const QObject *, const char *, const char *);
}

class QVBox: public QWidget
{
public:
 QVBox(QWidget *, const char *, int);
 ~QVBox();
}


<#
(define a (apply make <QApplication> (receive (argc+argv))))
(define hello (make <QPushButton> "hello world!" #f))
(define the_font_name
        (let ([a (make <QString> 'this a "Times")])
       a))
(define the_font (make <QFont> the_font_name 18 50 #f))
(resize hello 100 30)
(connect a hello "2clicked()" "1closeAllWindows()")
(setMainWidget a hello)
(show hello)
(exec a)
(destroy hello)
(destroy a)

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