mouse.c

提供大量C代码来实现不同功能

#include<graphics.h>
#include<stdlib.h>
#include<stdio.h>
#include<dos.h>
union REGS r;
int s=0;
int xtop,ytop,xbottom,ybottom;

void drawrh(int x,int y)
/*画出一个小"电阻"符号来*/
{line(x,y,x+15,y);
 line(x+15,y-5,x+15,y+5);
 line(x+15,y-5,x+35,y-5);
 line(x+15,y+5,x+35,y+5);
 line(x+35,y-5,x+35,y+5);
 line(x+35,y,x+50,y);
}
void mouse(int x,int y)
/*画一个小“+”*/
{
line(x-5,y,x+5,y);
line(x,y-5,x,y+5);
}
void read(int *x,int *y,int *mbutt,int *oldx,int *oldy)
/*读出当前的鼠标信息*/
{
 *oldx=*x;
 *oldy=*y;
 do
 {r.x.ax=3;
  int86(51,&r,&r);       /*产生鼠标中断*/
  *x=r.x.cx;             /*光标当前X坐标*/
  *y=r.x.dx;              /*光标当前Y坐标*/
  *mbutt=r.x.bx;         /*按键状态*/
	}while(*x==*oldx&&*y==*oldy&&*mbutt==0);
}
void tuo(int *butt,int *mx,int *my,int *ox,int *oy)
/*在拖动鼠标的过程中显示鼠标的痕迹，做出图像来*/
{
char *p;
while(*butt==1)
		  {
mouse(*ox,*oy);
			 if(s==0)
			 {
			 s=1;
			 drawrh(*mx,*my);
				}
				read(mx,my,butt,ox,oy);
			drawrh(*ox,*oy);
				drawrh(*mx,*my);
			   mouse(*mx,*my);
				bar(5,5,100,25);
  sprintf(p,"%d  %d",*mx,*my);
outtextxy(10,10,p);
//outtextxy(60,10,stry);
			}
xtop=(*mx);ytop=(*my-5);
xbottom=(*mx+50);ybottom=(*my+5);
}

void main()
{
int mx,my,ox,oy;
int butt;
char *strx,*stry;
int gd=DETECT,gm;
registerbgidriver( EGAVGA_driver );
 initgraph(&gd,&gm,"e:\\tc\\bgi");
drawrh(50,130);       /*画出要拖动的图形对象*/
setwritemode(XOR_PUT);  /*将画线方式设为异或*/
 r.x.ax=3;
 int86(51,&r,&r);
 mx=r.x.dx;
 my=r.x.cx;
 butt=r.x.bx;
 //mouse(mx,my);
 setfillstyle(1,BLACK);
 for(;;)
 {
   bar(5,5,100,25);
  sprintf(strx,"%d",mx);
	sprintf(stry,"%d",my);
outtextxy(10,10,strx);
outtextxy(60,10,stry);
  read(&mx,&my,&butt,&ox,&oy);  /*读取光标当前位置*/
  mouse(mx,my);                 /*在当前位置画出光标图形*/
  delay(20);
if((s==0)&&mx>50&&mx<100&&my>125&&my<135&&butt==1)
  {
 
   tuo(&butt,&mx,&my,&ox,&oy);

}
if(s==1&&mx>(xtop)&&mx<(xbottom)&&my<(ybottom)&&my>(ytop)&&butt==1)
  {
 drawrh(xtop,ytop+5);
   s=0;
   tuo(&butt,&mx,&my,&ox,&oy);

}
mouse(ox,oy);
mouse(mx,my);
if(butt==2)
	{
	closegraph();
	exit(0);
	}
}
}