eg_pggp.c

开放源码的编译器open watcom 1.6.0版的源代码

#include <graph.h>
#include <pgchart.h>
#include <string.h>
#include <conio.h>

#if defined ( __386__ )
    #define _FAR
#else
    #define _FAR    __far
#endif

#define NUM_VALUES 4

char _FAR *categories[ NUM_VALUES ] = {
    "Jan", "Feb", "Mar", "Apr"
};

float values[ NUM_VALUES ] = {
    20, 45, 30, 25
};

char bricks[ 8 ] = {
    0xff, 0x80, 0x80, 0x80, 0xff, 0x08, 0x08, 0x08
};

main()
{
    chartenv env;
    palettetype pal;

    _setvideomode( _VRES16COLOR );
    _pg_initchart();
    _pg_defaultchart( &env,
		      _PG_COLUMNCHART, _PG_PLAINBARS );
    strcpy( env.maintitle.title, "Column Chart" );
    /* get default palette and change 1st entry */
    _pg_getpalette( &pal );
    pal[ 1 ].color = 12;
    memcpy( pal[ 1 ].fill, bricks, 8 );
    /* use new palette */
    _pg_setpalette( &pal );
    _pg_chart( &env, categories, values, NUM_VALUES );
    /* reset palette to default */
    _pg_resetpalette();
    getch();
    _setvideomode( _DEFAULTMODE );
}