eg_pggy.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
};

main()
{
    chartenv env;
    styleset style;

    _setvideomode( _VRES16COLOR );
    _pg_initchart();
    _pg_defaultchart( &env,
		      _PG_COLUMNCHART, _PG_PLAINBARS );
    strcpy( env.maintitle.title, "Column Chart" );
    /* turn on yaxis grid, and use style 2 */
    env.yaxis.grid = 1;
    env.yaxis.gridstyle = 2;
    /* get default style-set and change entry 2 */
    _pg_getstyleset( &style );
    style[ 2 ] = 0x8888;
    /* use new style-set */
    _pg_setstyleset( &style );
    _pg_chart( &env, categories, values, NUM_VALUES );
    /* reset style-set to default */
    _pg_resetstyleset();
    getch();
    _setvideomode( _DEFAULTMODE );
}