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890天前#include <graphics.h> |
#include <stdlib.h> |
#include <stdio.h> |
#include <conio.h> |
int main(void) |
{ |
/* select a driver and mode that supports */ |
/* multiple pages. */ |
int gdriver = EGA, gmode = EGAHI, errorcode; |
int x, y, ht; |
/* initialize graphics and local variables */ |
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; |
ht = textheight("W"); |
/* select the off screen page for drawing */ |
setactivepage(1); |
/* draw a line on page #1 */ |
line(0, 0, getmaxx(), getmaxy()); |
/* output a message on page #1 */ |
settextjustify(CENTER_TEXT, CENTER_TEXT); |
outtextxy(x, y, "This is page #1:"); |
outtextxy(x, y+ht, "Press any key to halt:"); |
/* select drawing to page #0 */ |
setactivepage(0); |
/* output a message on page #0 */ |
outtextxy(x, y, "This is page #0."); |
outtextxy(x, y+ht, "Press any key to view page #1:"); |
getch(); |
/* select page #1 as the visible page */ |
setvisualpage(1); |
/* clean up */ |
getch(); |
closegraph(); |
return 0; |
} |
by: 发表于：2017-08-23 16:25:56 顶(0) | 踩(0) 回复
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