函数名: settextjustify

功 能: 为图形函数设置文本的对齐方式

用 法: void far settextjustify(int horiz, int vert);

程序例:

#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\", 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);

}