getpalettesize

Syntax

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

Description

getpalettesize is used to determine how many palette entries can be set for the current graphics mode. For example, the EGA in color mode returns 16.

Return Value

getpalettesize returns the number of palette entries in the current palette.

Windows Notes

The winbgim version of getpalettesize returns 16 for the palette color. However, in addition to the palette colors, the programmer may also use RGB colors.

See also

setallpalette

setpalette

Example

/* getpalettesize example */ 

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

int main()
{
   /* request autodetection */
   int gdriver = DETECT, gmode, errorcode;
   int midx, midy;
   char psize[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 palette size info into string */
   sprintf(psize, "The palette has %d modifiable entries.",getpalettesize());

   /* display the information */
   settextjustify(CENTER_TEXT, CENTER_TEXT);
   outtextxy(midx, midy, psize);

   /* clean up */
   getch();
   closegraph();

   return 0;
}