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实现代码：

/********************************************************************<br /> File: abstract_factory.h<br /> Author: blackboy blackboycpp@gmail.com<br /> Purpose: 抽象工厂模式<br /> Created: 2011-03-15<br /> Modified: 2011-03-15 09:21<br /> *********************************************************************/</p> <p>#ifndef __ABSTRACTORY_FACTORY_H__<br /> #define __ABSTRACTORY_FACTORY_H__</p> <p>namespace blackboycpp<br /> {<br /> class AbstractProductA;<br /> class AbstractProductB;</p> <p> //////////////////////////////////////////////////////////////////////////<br /> // Factories<br /> class AbstractFactory<br /> {<br /> public:<br /> virtual AbstractProductA* CreateProductA() = 0;<br /> virtual AbstractProductB* CreateProductB() = 0;<br /> };</p> <p> class ConcreteFactory1 : public AbstractFactory<br /> {<br /> public:<br /> virtual AbstractProductA* CreateProductA();<br /> virtual AbstractProductB* CreateProductB();<br /> };</p> <p> class ConcreteFactory2 : public AbstractFactory<br /> {<br /> public:<br /> virtual AbstractProductA* CreateProductA();<br /> virtual AbstractProductB* CreateProductB();<br /> };</p> <p> //////////////////////////////////////////////////////////////////////////<br /> // Products<br /> class AbstractProductA<br /> {<br /> public:<br /> virtual void Foo() = 0;<br /> };</p> <p> class AbstractProductB<br /> {<br /> public:<br /> virtual void Bar() = 0;<br /> };</p> <p> class ProductA1 : public AbstractProductA<br /> {<br /> public:<br /> virtual void Foo();<br /> };</p> <p> class ProductA2 : public AbstractProductA<br /> {<br /> public:<br /> virtual void Foo();<br /> };</p> <p> class ProductB1 : public AbstractProductB<br /> {<br /> public:<br /> virtual void Bar();<br /> };</p> <p> class ProductB2 : public AbstractProductB<br /> {<br /> public:<br /> virtual void Bar();<br /> };</p> <p>}</p> <p>#endif

#include <iostream><br /> #include "abstract_factory.h"</p> <p>namespace blackboycpp<br /> {<br /> //////////////////////////////////////////////////////////////////////////<br /> // Factories</p> <p> AbstractProductA* ConcreteFactory1::CreateProductA()<br /> {<br /> std::cout << "ConcreteFactory1::CreateProductA()/n";<br /> return new ProductA1;<br /> }</p> <p> AbstractProductB* ConcreteFactory1::CreateProductB()<br /> {<br /> std::cout << "ConcreteFactory1::CreateProductB()/n";<br /> return new ProductB1;<br /> }</p> <p> AbstractProductA* ConcreteFactory2::CreateProductA()<br /> {<br /> std::cout << "ConcreteFactory2::CreateProductA()/n";<br /> return new ProductA2;<br /> }</p> <p> AbstractProductB* ConcreteFactory2::CreateProductB()<br /> {<br /> std::cout << "ConcreteFactory2::CreateProductB()/n";<br /> return new ProductB2;<br /> }</p> <p> //////////////////////////////////////////////////////////////////////////<br /> // Products</p> <p> void ProductA1::Foo()<br /> {<br /> std::cout << "ProductA1::Foo()/n";<br /> }</p> <p> void ProductB1::Bar()<br /> {<br /> std::cout << "ProductB1::Bar()/n";<br /> }</p> <p> void ProductA2::Foo()<br /> {<br /> std::cout << "ProductA2::Foo()/n";<br /> }</p> <p> void ProductB2::Bar()<br /> {<br /> std::cout << "ProductB2::Bar()/n";<br /> }</p> <p>}

//#include <iostream><br /> #include <cstdlib><br /> #include "abstract_factory.h"<br /> using namespace blackboycpp;</p> <p>void Client(AbstractFactory* factory)<br /> {<br /> AbstractProductA* pa = factory->CreateProductA();<br /> AbstractProductB* pb = factory->CreateProductB();<br /> pa->Foo();<br /> pb->Bar();<br /> delete pa;<br /> delete pb;<br /> }</p> <p>int main(int argc, char** argv)<br /> {<br /> ConcreteFactory1* factory1 = new ConcreteFactory1;<br /> Client(factory1);<br /> delete factory1;</p> <p> system("pause");<br /> return 0;<br /> }