getmaxy

Syntax

#include <graphics.h>

int getmaxy(void);

Description

getmaxy returns the maximum (screen-relative) y value for the current graphics driver and mode.

For example, on a CGA in 320*200 mode, getmaxy returns 199. getmaxy is invaluable for centering, determining the boundaries of a region onscreen, and so on.

Return Value

getmaxy returns the maximum y screen coordinate.

See also

getmaxx

getwindowheight

gety

Example

/* getmaxy example */ 



#include <graphics.h>

#include <stdlib.h>

#include <stdio.h>

#include <conio.h>



int main(void)

{

  /* request autodetection */

  int gdriver = DETECT, gmode, errorcode;

  int midx, midy;

  char xrange[80], yrange[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;



  /* convert max resolution values into strings */

  sprintf(xrange, "X values range from 0..%d", getmaxx());

  sprintf(yrange, "Y values range from 0..%d", getmaxy());



  /* display the information */

  settextjustify(CENTER_TEXT, CENTER_TEXT);

  outtextxy(midx, midy, xrange);

  outtextxy(midx, midy+textheight("W"), yrange);





  /* clean up */

  getch();

  closegraph();

  return 0;

}