getlinesettings

用 法: void far getlinesettings(struct linesettingstype far *lininfo):

程序例:

#include

#include

#include

#include

/* the names of the line styles supported */

char *lname[] = { "SOLID_LINE",

"DOTTED_LINE",

"CENTER_LINE",

"DASHED_LINE",

"USERBIT_LINE"

};

int main(void)

{

/* request auto detection */

int gdriver = DETECT, gmode, errorcode;

struct linesettingstype lineinfo;

int midx, midy;

char lstyle[80], lpattern[80], lwidth[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;

/* get information about current line settings */

getlinesettings(&lineinfo);

/* convert line information into strings */

sprintf(lstyle, "%s is the line style.",

lname);

sprintf(lpattern, "0x%X is the user-defined line pattern.",

lineinfo.upattern);

sprintf(lwidth, "%d is the line thickness.",

lineinfo.thickness);

/* display the information */

settextjustify(CENTER_TEXT, CENTER_TEXT);

outtextxy(midx, midy, lstyle);

outtextxy(midx, midy+2*textheight("W"), lpattern);

outtextxy(midx, midy+4*textheight("W"), lwidth);

/* clean up */

getch();

closegraph();

return 0;

}