这个例子看起来就很漂亮嘛。
#include<math.h>
#include<dos.h>
#include<graphics.h>
#define CENTERX 320 /*表盘中心位置*/
#define CENTERY 175
#define CLICK 100 /*喀嗒声频率*/
#define CLICKDELAY 30 /*喀嗒声延时*/
#define HEBEEP 10000 /*高声频率*/
#define LOWBEEP 500 /*低声频率*/
#define BEEPDELAY 200 /*报时声延时*/
/*表盘刻度形状*/
int Mrk_1[8]={-5,-160,5,-160,5,-130,-5,-130, }
int Mrk_2[8]={-5,-160,5,-160,2,-130,-2-130, }
/*时针形状*/
int HourHand[8]={-3,-100,3,-120,4, 10,-4,10}
/*分针形状*/
int MiHand[8]={-3,-120,3,-120,4, 10,-4,10}
/*秒针形状*/
int SecHand[8]={-2,-150,2,-150,3, 10,-3,10}
/*发出喀嗒声*/
void Click()
{
sound(CLICK)
delay(CLICKDELAY)
nosound()
}
/*高声报时*/
void HighBeep()
{
sound(HEBEEP)
delay(BEEPDELAY)
nosound
}
/*低声报时*/
void LowBeep()
{
sound(LOWBEEP)
}
/*按任意角度画多边形*/
void DrawPoly(int *data,int angle,int color)
{
int usedata[8]
float sinang,cosang
int i
sinang=sin((float)angle/180*3.14)
cosang=cos((float)angle/180*3.14)
for(i=0i<8i+=2)
{
usedata[i] =CENTERX+ cosang*data[i]-sinang*data[i+1]+.5
usedata[i+1]=CENTERY+sinang*data[i]+cosang*data[i+1]+.5
}
setfillstyle(SOLID_FILL,color)
fillpoly(4,usedata)
}
/*画表盘*/
void DrawClock(struct time *cutime)
{
int ang
float hourrate,minrate,secrate
setbkcolor(BLUE)
cleardevice()
setcolor(WHITE)
/* 画刻度*/
for(ang=0ang<360ang+=90)
{
DrawPoly(Mrk_1,ang,WHITE)
DrawPoly(Mrk_2,ang+30,WHITE)
DrawPoly(Mrk_2,ang+60,WHITE)
}
secrate=(float)cutime->ti_sec/60
minrate=((float)cutime->ti_min+secrate)/60
hourrate=(((float)cutime->ti_hour/12)+minrate)/12
ang=hourrate*360
DrawPoly(HourHand,ang,YELLOW)/*画时针*/
ang=minrate*360
DrawPoly(MiHand,ang, GREEN)/*画分针*/
ang=secrate*360
DrawPoly(SecHand,ang, RED)/*画秒针*/
}
main()
{
int gdriver=EGA,
gmode=EGAHI
int curpage
struct time curtime ,newtime
initgraph(&gdriver,&gmode,"c:\\tc")
setbkcolor(BLUE)
cleardevice()
gettime(&curtime)
curpage=0
DrawClock(&curtime)
while(1)
{
if(kbhit())
break/*按任意键退出*/
gettime(&newtime)/*检测系统时间*/
if(newtime.ti_sec!=curtime.ti_sec)/*每1秒更新一次时间*/
{
if(curpage==0)
curpage=1
else
curpage=0
curtime=newtime
/*设置绘图页*/
setactivepage(curpage)
/*在图页上画表盘*/
DrawClock(&curtime)
/*设置绘图页为当前可见页*/
setvisualpage(curpage)
/*0分0秒高声报时*/
if(newtime.ti_min==0&&newtime.ti_sec==0)
HighBeep()
/* 59分55至秒时低声报时*/
else if(newtime.ti_min==59&&
newtime.ti_sec<=59)
LowBeep()/*其他时间只发出喀嗒声*/
else
Click()
}
}
closegraph()
}
我知道的界面做的最好的应该是ghost，采用C语言编写我们一般学习C语言旨在学习C语言的编程方法和算法，所以不要嫌弃C语言运行时的黑屏幕，更好的界面一般都是用C++等面向对象的语言去编写的。
