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876天前#include <graphics.h> |
#include <stdlib.h> |
#include <stdio.h> |
#include <conio.h> |
/* function prototype */ |
void xat(int x, int y); |
/* horizontal text justification settings */ |
char *hjust[] = { "LEFT_TEXT", |
"CENTER_TEXT", |
"RIGHT_TEXT" |
}; |
/* vertical text justification settings */ |
char *vjust[] = { "LEFT_TEXT", |
"CENTER_TEXT", |
"RIGHT_TEXT" |
}; |
int main(void) |
{ |
/* request auto detection */ |
int gdriver = DETECT, gmode, errorcode; |
int midx, midy, hj, vj; |
char msg[80]; |
/* 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 */ |
} |
midx = getmaxx() / 2; |
midy = getmaxy() / 2; |
/* loop through text justifications */ |
for (hj=LEFT_TEXT; hj<=RIGHT_TEXT; hj++) |
for (vj=LEFT_TEXT; vj<=RIGHT_TEXT; vj++) |
{ |
cleardevice(); |
/* set the text justification */ |
settextjustify(hj, vj); |
/* create a message string */ |
sprintf(msg, "%s %s", hjust[hj], vjust[vj]); |
/* create cross hairs on the screen */ |
xat(midx, midy); |
/* output the message */ |
outtextxy(midx, midy, msg); |
getch(); |
} |
/* clean up */ |
closegraph(); |
return 0; |
} |
/* draw an "x" at (x, y) */ |
void xat(int x, int y) |
{ |
line(x-4, y, x+4, y); |
line(x, y-4, x, y+4); |
} |
