Listing 1: Printing using the generic class BasePrinter

#include <stdio.h>
#include "printers.hpp"

void main(void)
{
 BasePrinter *printer;
 int choice = 1;

 printf("Printing Example:\n");
 printf("1 - file I/O, 2 - Raw GDI, 3 - GDI\n");
 printf("Choice:");
 scanf("%d",&choice);
 switch (choice) {
    case 1: printer = new DirectPrinter(); break;
    case 2: printer = new WinDirPrinter(); break;
    case 3: printer = new WinGDIPrinter(); break;
    }

 printer->SetFontPointSize();
 printer->PrintLine("Dave's Printing Example");
 printer->PrintLine(" **  Hello Printer ** ");
 printer->EjectPaper();
 delete printer;
 };
//End of File