关闭图形系统

[c]代码库

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

int main ( void )
{
	/* request auto detection */
	int gdriver = DETECT, gmode, errorcode;
	int x, y;

	/* initialize graphics mode */
	initgraph ( &gdriver, &gmode, "" );

	/* read result of initialization */
	errorcode = graphresult();

	if ( errorcode != grOk )  /* an error
      occurred */
	{
		printf ( "Graphics error: %s\n", grapherrormsg ( errorcode ) );
		printf ( "Press any key to halt:" );
		getch();
		exit ( 1 ); /* terminate with an error code */
	}

	x = getmaxx() / 2;
	y = getmaxy() / 2;

	/* output a message */
	settextjustify ( CENTER_TEXT, CENTER_TEXT );
	outtextxy ( x, y, "Press a key to close the graphics system:" );

	/* wait for a key */
	getch();

	/* closes down the graphics system */
	closegraph();

	printf ( "We're now back in text mode.\n" );
	printf ( "Press any key to halt:" );
	getch();
	return 0;
}