figure.cpp

教材例子

//程序FIGURE.CPP(8.6.3)		功能：图形类FIGURE的类实现 
#include "figstack.h"
FIGURE::FIGURE(int x, int y)
{
	x_pos=x;
	y_pos=y;
	visible=FALSE;
}
void FIGURE::move_to(int x, int y)
{
	this->hide();
	this->x_pos=x;
	this->y_pos=y;
	this->show();
}
void FIGURE::contract(int delta)
{
	expand(-delta);
}
BOOLEAN FIGURE::is_visible()
{
	return visible;
}