分享两段MFC程序(CDate类+窗口消息事件)

Cfans_gpl   2013年8月9日   草根站长   浏览(5532)   关键字: 代码分享

无意中翻到了一个大学时候的程序，特在此分享一下。尽管已经不涉猎VC领域了，但是还是希望对需要的人会有帮助。

1、CDate类

#include <iostream.h>
class CDate
{
 public:
  CDate();   //默认构造函数
  virtual ~CDate(){} //释放系统资源
  void showdate(); //显示日期函数声明
  CDate operator ++(); //重载前缀自增运算符函数声明
  CDate operator ++(int);  //重载后缀自增运算符函数声明
  int days();  //计算该年的第几天函数声明
  CDate set_day();//重新输入（年月日）函数声明
  int nday;  //天数
 private:
  int year;
  int month;
  int day;
  static int cday[13];//定义静态数组成员  
};
int CDate::cday[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};//初始化静态数组变量
CDate::days()
{
 int i;
 nday=0;
 for(i=0;i<month;i++)
  nday+=cday[i];
 nday+=day;
 if((year%4 == 0&&year%100!=0||year%400 == 0)&&month >=3)
  nday+=1;
 return(nday);
}
CDate::CDate()
{ 
 cout<<"请输入年月日：";
 cin>>year>>month>>day;
 while(day>31||day<1||month<1||month>12||year<1||year>9999)
 {
  cout<<"输入不合法！"<<endl;
  cout<<"请重新输入：";
  cin>>year>>month>>day;
 }
}
CDate CDate::set_day()
{ 
 
 cout<<"请输入年月日）：";
 cin>>year>>month>>day;
 while(day>31||day<1||month<1||month>12||year<1||year>9999)
 {
  cout<<"输入不合法！"<<endl;
  cout<<"请重新输入：";
  cin>>year>>month>>day;
 }
 return *this;
}
void CDate::showdate()
{
 cout<<year<<"年"<<month<<"月"<<day<<"日";
}
CDate CDate::operator ++()
{ 
 int day_m;
 if(month ==2&&(year%4 ==0&&year%100!=0||year%400 ==0)) //闰年的二月
 {
  day_m = cday[month]+1;
 }
 else
 {
  day_m = cday[month];
 }
 if(day<day_m)
 {
  ++day;
 }
 else
 {
  if(day=day_m&&month == 12)
  {
   ++year;
   month = 1;
   day = 1;
   nday = 0;}
  else
  { 
   ++month;
   day = 1;
  }
 }
 nday+=1;
 return *this;
}
CDate CDate::operator ++(int)
{
 CDate tmp(*this);//创建临时对象
 int day_m;
 if(month == 2&&(year%4 == 0&&year%100!=0||year%400 == 0))
 {
  day_m = cday[month]+1;
 }
 else
 {
  day_m = cday[month];
 }
 if(day<day_m)     //如果日小于月的最大日数
 {
  ++day;
 }
 else 
 {
  if(day=day_m&&month == 12)  //如果日等于月的最大日数且是12月
  {
   ++year;
   month = 1;
   day = 1;
   nday = 0;
  }
  else
  { 
   ++month;
   day = 1;
  }
 }
 nday+=1;
 return tmp;//返回临时对象
}
int main()
{
 CDate date;
 int nchoice= -1;
 while(nchoice!= 0)
 {
  cout<<endl;
  cout<<"1.计算该日期在一年中的第几天:"<<endl;
  cout<<"2.使天数加一天（前缀）:"<<endl;
  cout<<"3.使天数加一天（后缀）:"<<endl;
  cout<<"4.重新输入（年月日）:"<<endl;
  cout<<"5.退出:"<<endl;
  cout<<"请选择：";
  cin>>nchoice;
  switch(nchoice)
  {
   case 1:
    int nday;
    date.showdate();
    nday=date.days();
    cout<<"在这一年中是第"<<nday<<"天."<<endl;
    break;
   case 2:
    ++date;
    date.showdate();
    nday=date.nday;
    cout<<"在这一年中是第"<<nday<<"天."<<endl;
    break;
   case 3:
    date++;
    date.showdate();
    nday=date.nday;
    cout<<"在这一年中是第"<<nday<<"天."<<endl;
    break;
   case 4:
    date.set_day();
    break;
   case 5:
    return 0;
    break;
   default:
    cout<<"输入错误!"<<endl;
  }
 }
  return 0;
}

2、窗口消息事件

void CTESTView::OnLButtonDown(UINT nFlags, CPoint point) 
{
// TODO: Add your message handler code here and/or call default
CClientDC dc(this);
int x1,y1,x2,y2;
int color=RGB(0,0,255);
CPen newPen(PS_SOLID,1,color);
CPen *oldPen=dc.SelectObject(&newPen);
x1=point.x-6;
    y1=point.y-6;
x2=point.x+6;
y2=point.y+6;
dc.Ellipse(x1,y1,x2,y2);
dc.SelectObject(oldPen);
CView::OnLButtonDown(nFlags, point);
}
void CTESTView::OnLButtonUp(UINT nFlags, CPoint point) 
{
// TODO: Add your message handler code here and/or call default
CClientDC dc(this);
CString str;
int pt1,pt2;
pt1=point.x;
pt2=point.y;
str.Format("x=%d,y=%d",pt1,pt2);
dc.SetTextColor(RGB(255,0,0));
dc.TextOut(pt1-10,pt2+10,str);
CView::OnLButtonUp(nFlags, point);
}
void CMainFrame::OnClose() 
{
 // TODO: Add your message handler code here and/or call default
 int i;
 i=MessageBox("确定要关闭吗","关闭",MB_YESNO);
 if(i==IDYES)
 {
  CFrameWnd::OnClose();
 }
 else
 {
 ;
 }
}

 

 

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