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c:graphics.h:getmaxy

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c:graphics.h:getmaxy [2015/05/06 23:06] (current)
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 +===== getmaxy =====
 +
 +
 +====Syntax of getmaxy ==== 
 + <code c>
 +#include <graphics.h>
 +int getmaxy(void);
 +  </code>
 +
 +
 +==== Description of getmaxy ==== 
 +<code c>
 +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.
 +</code>
 +
 +
 +==== Example of getmaxy ====
 +<code c>
 +/* 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;
 +}
 +</code>
 +
 +
 +==== See also ====
 +[[getmaxx]]
 +[[getwindowheight]]
 +[[gety]]
 +
 +
 +===== output of getmaxy example ===== 
 +
 +    no output of example at the moment
 +    do not hesitate and add it...  
 +
 +
  
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c/graphics.h/getmaxy.txt · Last modified: 2015/05/06 23:06 (external edit)

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