Design Patterns Explained

Chapter 1O • The Abstract Factory Pattern 181
Example 1O-6 C++ Code Fragments: Implementation of ResFactory
class LowResFact : public ResFactory;
DisplayDriver *
LowResFact::getDispDrvr() {
return new Irdd; }
PrintDriver *
LowResFact::getPrtDrvr() {
return new Irpd; }
class HighResFact : public ResFactory;
DisplayDriver *
HighResFact::getDispDrvr()
{ return new hrdd;
}
PrintDriver *
HighResFact::getPrtDrvr() {
return new hrpd; }