getimage example in c

Header file:

    graphics.h

Synopsis:

      void getimage(int left, int top, int right, int bottom, void *bitmap);

     (left, top) - top left of the specified rectangular area

     (bottom, right) - bottom right of the specified rectangular area

     bitmap - pointer to the bitmap image in memory

     

Description:

     getimage() stores image in the specified region on screen to memory.

getimage function in c graphics

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


  int main(void) {
        int gdriver=DETECT, gmode, err, color;
        int i, x[8], y[8], midx, midy, radius = 60;
        void far *image;
        unsigned long size;

        /* auto-detect the graphics driver and mode */
        initgraph(&gdriver, &gmode, "C:/TURBOC3/BGI");
        err = graphresult();

        /* check for any errors */
        if (err != grOk) {
                printf("Graphics error: %s\n",
                                grapherrormsg(err));
                getch();
                return 0;
        }

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

        /* below concentric circle will be sliced to 4 images */

        for (i = 1; i <= 5; i++) {

                if (i % 2 == 0) {

                        color = 15;

                } else {

                        color = i;

                }

                setcolor(color);

                setfillstyle(SOLID_FILL, color);

                circle(midx, midy, radius);

                floodfill(midx, midy, color);

                radius = radius - 10;

        }

        /* top left and bottom right for image 1 */

        x[0]= midx, y[0] = midy;

        x[1]= midx + 60, y[1] = midy + 60;

        /* top left and bottom right for image 2 */

        x[2]= midx, y[2] = midy - 60;

        x[3]= midx + 60, y[3] = midy;

        /* top left and bottom right for image 3 */

        x[4]= midx - 60, y[4] = midy;

        x[5]= midx, y[5] = midy + 60;

        /* top left and bottom right for image 4 */

        x[6]= midx - 60, y[6] = midy - 60;

        x[7]= midx, y[7] = midy;

        size = imagesize(x[0], y[0], x[1], y[1]);

        image = farmalloc(size);

        if (!image) {

                printf("Error: unable to allocate requested block");

                getch();

                closegraph();

                exit(1);

        }

        /* saves image on screen to memory */

        getimage(x[0], y[0], x[1], y[1], image);

        /* prints image on to the screen */

        putimage(0, 0, image, COPY_PUT);

        getimage(x[2], y[2], x[3], y[3], image);

        putimage(0, 60, image, COPY_PUT);

        getimage(x[4], y[4], x[5], y[5], image);

        putimage(60, 0, image, COPY_PUT);

        getimage(x[6], y[6], x[7], y[7], image);

        putimage(60, 60, image, COPY_PUT);

        /* clean up */

        getch();

        closegraph();

        return 0;

  }

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

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