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Saturday 14 September 2013

setallpalette example in c

Header file:
    graphics.h

Synopsis:
      void setallpalette(struct palettetype *palette);
     struct palettetype {
          unsigned char size; /* no of colors in the palette */
          signed char color[MAXCOLOR + 1] /* color nos for each entry in the palette */
     };
     
Description:
     setallpalette() sets all palette colors to the values in the given palettetype structure.


setallpalette function in c graphics



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

  int main(void) {
        /* request auto detection */
        int graphicDriver = DETECT, graphicMode;
        int color, err, midx, midy, radius = 200;
        struct palettetype pal;

        /* initialize graphics and local variables */
        initgraph(&graphicDriver, &graphicMode,
                                "C:/TURBOC3/BGI");

        /* read result of initialization */
        err = graphresult();

        if (err != grOk) {
                /* an error occurred */
                printf("Graphics Error: %s\n",
                                grapherrormsg(err));
                getch();
                return 0;
        }

        /* grab a copy of the palette */
        getpalette(&pal);

        /* mid position in x and y-axis */
        midx = getmaxx() / 2;
        midy = getmaxy() / 2;

        /* display the default palette colors */
        for (color=1; color<=getmaxcolor(); color++) {
                setcolor(color);
                circle(midx, midy, radius);
                radius = radius - 25;
                delay(400);
        }

        /* black out the colors one by one */
        for (color=1; color<=getmaxcolor(); color = color + 2) {
                setpalette(color, BLACK);
                delay(400);
        }

        /* restore the palette colors */
        setallpalette(&pal);

        /* clean up */
        getch();
        closegraph();
        return 0;
  }





Output: (setallpalette built-in function in c graphics.h)


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