Thread: how do i print the screen?

I do believe that "print the screen" means print the screen to the default printer. Yes you can do it. It takes a lot more code than you are probably ready for though.


This is a sampling of what 'just' writing to the the parallel port involves... it doesn't include reading the video buffer, etc.

Code:

#include <conio.h>
#include <stdio.h>

int _outp( unsigned short port, int databyte );

// This program accepts an input from the user
// in decimal and outputs that number as an 8-bit
// binary number to the port at 378 hex, usually
// LPT1

int main () {


	int inval = 0;

	while ( inval < 256) {

	  printf("Enter a value in decimal (256 to quit)>");
	  scanf("%d", &inval);
	

	  _outp(0x378, inval);
 
	}

	_outp(0x378, 0);


return 0;
}

http://www.mattjustice.com/parport/par_vc.html

Or as I like to call it... "The right way." hahahah

Code:

#include <iostream>
#include <fstream>
#include <stdlib>
using namespace std ;

int main()
{

        char printer[10] = "LPT1:";
        char character;

        
        ofstream prnt (printer);


        if (! prnt) 
        {
                cout << "ERROR-Unable to open " << printer << '\n' ;
                return 1 ;
        }
        system ("cls");

        cout << "Type the text you wish to have printed.  You must use "
             << "\nyour own returns as there is no text wrapping other than "
             << "\nthat which the printer will do at the end of page. Though, "
             << "\nthis may lead to words being cut in half.  This simple "
             << "\nprogram could be made much better utilizing iomanip for text "
             << "\nformatting, but it shows you the basics of opening a printer "
             << "\nport. " << endl << endl
             << "Press a '#' and return when you are ready to print... " << endl
             << endl << endl;


        while (character != '#')
        {
                cin.get(character);

                if(character != '#')
                   prnt.put(character);
        }
        

        prnt << '\r' << '\f' ; // return and eject the last page from the printer


        prnt.close();

return(0);

}