rk.h

#include <stdlib.h>
#include <stdio.h>
#include <X11/Xlib.h>

static Window** box;     /* box (NYxNX) window array address */
static Window* row;      /* NY row window  box containe array  */
static unsigned NX=4;   /* Default Boxes' number in each row */
static unsigned NY=2;    /* Default Row's number in game desk */

/* dynamic memory allocation for all game desk array */
int alloc() {
    void* r;                /* row array pointer */
    void** b;               /* box array pointer */
    int i;                  /* row array index */
    r = calloc(NY, sizeof(unsigned long));
    b = calloc(NY, sizeof(void*));
    for(i=0; i < NY; i++) {
        b[i] = calloc(NX,  sizeof(unsigned long));
    }
    row = (Window* ) r;
    box = (Window**) b;
    return(0);
}

/* free allocated memory */
int dealloc(Window** b, Window* r) {
    int i;   /* row index */
    for(i=0; i < NY; i++) {
        free(b[i]);
    }
    free(b); free(r);
    return(0);
}