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closegraph

By Bonnie Elliott,2014-08-27 18:39
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closegraph

函数名: closegraph

     : 关闭图形系统

     : #include <graphics.h>

     void far closegraph(void); 程序例:

    #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;

    }

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