getlinesettings

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Syntax

#include <graphics.h>

void getlinesettings(struct linesettingstype *lineinfo);

Description

getlinesettings fills a linesettingstype structure pointed to by lineinfo with information about the current line style, pattern, and thickness.

The linesettingstype structure is defined in graphics.h as follows:

struct linesettingstype {

   int linestyle;

   unsigned upattern;

   int thickness;

};

linestyle specifies in which style subsequent lines will be drawn (such as solid, dotted, centered, dashed). The enumeration line_styles, defined in graphics.h, gives names to these operators:

Name	Value	Description
SOLID_LINE	0	Solid line
DOTTED_LINE	1	Dotted line
CENTER_LINE	2	Centered line
DASHED_LINE	3	Dashed line
USERBIT_LINE	4	User-defined line style

thickness specifies whether the width of subsequent lines drawn will be normal or thick.

Name	Value	Description
NORM_WIDTH	1	1 pixel wide
THICK_WIDTH	3	3 pixels wide

Return Value

None.

See also

setlinestyle

Example

/* getlinesettings example */ 



#include <graphics.h>

#include <stdlib.h>

#include <stdio.h>

#include <conio.h>





/* the names of the line styles supported */

char *lname[] = { "SOLID_LINE", "DOTTED_LINE", "CENTER_LINE", "DASHED_LINE", "USERBIT_LINE" };



int main(void)

{

   /* request autodetection */

   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[lineinfo.linestyle]);

  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;

}

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