eg_setvp.c

开放源码的编译器open watcom 1.6.0版的源代码

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

#define XSIZE 380
#define YSIZE 280

main()
{
    _setvideomode( _VRES16COLOR );
    _setviewport( 130, 100, 130 + XSIZE, 100 + YSIZE );
    _ellipse( _GBORDER, 0, 0, XSIZE, YSIZE );
    getch();
    _setvideomode( _DEFAULTMODE );
}