gof设计模式——抽象工厂 c++实现

/* 抽象工厂 shapherd */

#include<iostream>
using namespace std;

class Window {
public:
virtual ~Window() {}
//virtual ~Window() = 0;
};

class PMWindow : public Window {
public:
PMWindow()
{
cout<<"PMWindow created"<<endl;
}
};
class MotifWindow : public Window {
public:
MotifWindow()
{
cout<<"motifWindow created"<<endl;
}
};

class ScrollBar{
public:
virtual ~ScrollBar() {}
};

class PMScrollBar : public ScrollBar {
public:
PMScrollBar()
{
cout<<"PMScrollbar created"<<endl;
}
};
class MotifScrollBar : public ScrollBar {
public:
MotifScrollBar()
{
cout<<"MotifScrollbar created " <<endl;
}
};

class WidgetFactory {
public:
virtual ~WidgetFactory() {}
virtual ScrollBar* CreatScrollBar() = 0;
virtual Window* CreatWindow() = 0;
};

class PMWidgetFactory : public WidgetFactory {
ScrollBar* CreatScrollBar()
{
return new PMScrollBar;
}
Window* CreatWindow()
{
return new PMWindow;
}
};
class MotifWidgetFactory : public WidgetFactory {
ScrollBar* CreatScrollBar()
{
return new MotifScrollBar;
}
Window* CreatWindow()
{
return new MotifWindow;
}
};

int main(int argc, char* argv[])
{
WidgetFactory *wfOfPM = new PMWidgetFactory();
wfOfPM->CreatWindow();
wfOfPM->CreatScrollBar();
delete wfOfPM;
WidgetFactory *wfOfMotif = new MotifWidgetFactory();
wfOfMotif->CreatWindow();
wfOfMotif->CreatScrollBar();
delete wfOfMotif;
}