eg_getpa.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>

main()
{
    int old_act;

    _setvideomode( _VRES16COLOR );
    old_act = _getplotaction();
    _setplotaction( _GPSET );
    _rectangle( _GFILLINTERIOR, 100, 100, 540, 380 );
    getch();
    _setplotaction( _GXOR );
    _rectangle( _GFILLINTERIOR, 100, 100, 540, 380 );
    getch();
    _setplotaction( old_act );
    _setvideomode( _DEFAULTMODE );
}