getviewsettings

Gets information about the current viewport.

Defined in header <graphics.h>

Syntax

#include <graphics.h>
void far getviewsettings(struct viewporttype far *viewport);

Portability

Remarks

getviewsettings fills the viewporttype structure pointed to by viewport with information about the current viewport.

The viewporttype structure used by getviewport is defined in graphics.h as follows:

struct viewporttype { int left, top, right, bottom; int clip; };

Return value

None.

See also

• clearviewport
• getx
• gety
• setviewport

Example

#include <graphics.h>
*include <stdlib.h>
#include <stdio.h>
*include <conio.h>

char *clip[] = { "OFF",  "ON" };

int main(void)
{
   /* request autodetection  */
   int gdriver = DETECT, gmode, errorcode;
   struct viewporttype viewinfo;
   int midx, midy, ht;
   char topstr[80], botstr[80], clipstr[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:");
   getchO
   exit(l)                 /* terminate with an error code */

midx = getmaxxO  / 2;
midy = getmaxyO  / 2;

/* get information about current  viewport */
getviewsettings (&viewinfo);

/* convert text information  into strings */
sprintf (topstr, "(%d, %d) is the upper left viewport corner.", viewinfo.left,
        viewinfo.top) ;
sprintf (botstr, "(%d, %d) is the lower right viewport corner.",
        viewinfo.right, viewinfo. bottom);
sprintf (clipstr, "Clipping is turned %s.", clip[viewinfo.clip]);

/* display the information  */
settextjustify (CENTER_TEXT, CENTER_TEXT);
ht = textheight("W") ;
outtextxy (midx, midy, topstr);
outtextxy(midx, midy+2*ht, botstr);
outtextxy (midx, midy+4*ht, clipstr);

/* clean up */
getchO ;
closegraphO ;
return 0;

Differences from modern implementations

Nothing recorded yet.

Modern references

• Microsoft C runtime (search)

These are search links, not yet checked by hand.

Stable link: /3.1/graphics.h/getviewsettings/ · short form /3.1/getviewsettings/