eg_pggc.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>

#define NUM_VALUES 4

float x[ NUM_VALUES ] = {
    5, 25, 45, 65
};

float y[ NUM_VALUES ] = {
    5, 45, 25, 65
};

char diamond[ 8 ] = {
    0x10, 0x28, 0x44, 0x82, 0x44, 0x28, 0x10, 0x00
};

main()
{
    chartenv env;
    char old_def[ 8 ];

    _setvideomode( _VRES16COLOR );
    _pg_initchart();
    _pg_defaultchart( &env,
		      _PG_SCATTERCHART, _PG_POINTANDLINE );
    strcpy( env.maintitle.title, "Scatter Chart" );
    /* change asterisk character to diamond */
    _pg_getchardef( '*', old_def );
    _pg_setchardef( '*', diamond );
    _pg_chartscatter( &env, x, y, NUM_VALUES );
    _pg_setchardef( '*', old_def );
    getch();
    _setvideomode( _DEFAULTMODE );
}