Hi
I am developing a library and in Qt Tradition I want to use the d_ptr pattern.
I have no previous experience of using this pattern and have a simple example
working but wanted to check that my implementation is correct.
To that end I have set out my classes below and would be grateful if anyone
could confirm that my approach is correct(or not)
Thanks
Header file
#ifndef DISPLAYWIDGET_H
#define DISPLAYWIDGET_H
#include "DisplayWidgetsGlobal.h"
#include <QWidget>
class DisplayWidgetPrivate;
class DISPLAYWIDGETS_EXPORT DisplayWidget : public QWidget
{
Q_OBJECT
public:
DisplayWidget(QWidget *parent);
~DisplayWidget();
private:
DisplayWidgetPrivate* d_ptr;
Q_DECLARE_PRIVATE(DisplayWidget)
};
#endif // DISPLAYWIDGET_H
Private Header file
#include "DisplayWidget.h"
class QLabel;
class DisplayWidgetPrivate
{
public:
DisplayWidgetPrivate (DisplayWidget* parent);
void init();
QLabel* m_label;
DisplayWidget* const q_ptr;
Q_DECLARE_PUBLIC(DisplayWidget)
public:
DisplayWidgetPrivate();
};
Implementation file
#include <QLabel>
#include "DisplayWidget.h"
#include "DisplayWidget_p.h"
DisplayWidgetPrivate::DisplayWidgetPrivate(DisplayWidget* parent)
: q_ptr(parent)
{
}
void DisplayWidgetPrivate::init()
{
m_label = new QLabel("This is a label",q_ptr);
}
DisplayWidget::DisplayWidget(QWidget *parent)
: QWidget(parent),
d_ptr(new DisplayWidgetPrivate(this))
{
Q_D(DisplayWidget);
d->init();
}
DisplayWidget::~DisplayWidget()
{
}
_______________________________________________
Interest mailing list
Interest@qt-project.org
http://lists.qt-project.org/mailman/listinfo/interest
