#include <graphics.h>
int getwindowheight(void);
 

The getwindowheight function is available in the winbgim implementation
of BGI graphics. The function returns the total height of the window
including nondrawable border areas.

/* getwindowheight example */
#include <graphics.h>
 
int main(void)
{
   int w_above, w_below;
   int height; // Total height of w_above;
 
   // Make two windows, one on top of the other */
   w_above = initwindow(300, 200);
   height = getwindowheight( );
   w_below = initwindow(300, 200, 0, height);
 
   /* clean up */
   getch();
   closegraph();
   return 0;
}

getmaxy getwindowwidth gety

  no output of example at the moment
  do not hesitate and add it...