C++ MFC 做個(gè)時(shí)鐘顯示軟件

1、現(xiàn)在以最短的時(shí)間帶領(lǐng)大家進(jìn)行一個(gè)C+ MFC做的時(shí)鐘軟件，下面分幾步敘述，相信大家看完本期實(shí)驗(yàn)，自己也能獨(dú)立做個(gè)這樣的軟件第一啟動(dòng)Visual C+ 6.0，創(chuàng)建一個(gè)單文檔應(yīng)用程序，工程名為Clock。第二 打開ClassWizard對話框?yàn)镃ClockView類添加WM_TIMER和WM_CREAT消息函數(shù)代碼如下。void CClockView:OnTimer(UINT nIDEvent) / TODO: Add your message handler code here and/or call defaultInvalidateRect(NULL,true);UpdateWindow(

2、);CView:OnTimer(nIDEvent);int CClockView:OnCreate(LPCREATESTRUCT lpCreateStruct) if (CView:OnCreate(lpCreateStruct) = -1)return -1;/ TODO: Add your specialized creation code hereSetTimer(1,1000,NULL);return 0;我們現(xiàn)在分別添加，截圖如下第三打開ClockView.cpp文件添加頭文件，調(diào)用數(shù)學(xué)函數(shù)庫。在其他函數(shù)中添加代碼。#include "math.h"截圖如下第四在

3、其他函數(shù)中添加代碼。代碼如下void CClockView:OnDraw(CDC* pDC)CClockDoc* pDoc = GetDocument();ASSERT_VALID(pDoc);/ TODO: add draw code for native data here/獲取客戶區(qū)大小RECT Rect;GetClientRect(&Rect);/計(jì)算橢圓中心位置int CenterX = Rect.right/2;/區(qū)域最右邊的一半int CenterY = Rect.bottom/2;/區(qū)域最下邊的一半CTime Time= CTime:GetCurrentTime();/

4、取當(dāng)前時(shí)間CString str;int i,x,y;CSize size;/創(chuàng)建一支黑色的筆CPen Pen(PS_SOLID,5,RGB(0,0,0);/選進(jìn)設(shè)備表，保存原筆CPen *OldPen = pDC->SelectObject(&Pen);/繪制鐘面橢圓pDC->Ellipse(5,5,Rect.right-5,Rect.bottom-5);double Radians;/設(shè)置字體顏色為紅色pDC->SetTextColor(RGB(255,0,0);for(i = 1;i <= 12;i+)/格式化鐘點(diǎn)值str.Format("%d&

5、quot;,i);size = pDC->GetTextExtent (str,str.GetLength();/計(jì)算時(shí)間點(diǎn)放置的位置Radians = (double)i*6.28/12.0; x=CenterX-(size.cx/2)+(int)(double)(CenterX-0)*sin(Radians);y=CenterY-(size.cy/2)-(int)(double)(CenterY-20)*cos(Radians);/繪制12個(gè)時(shí)間點(diǎn)（1-12）pDC->TextOut(x,y,str);/計(jì)算時(shí)鐘指針的夾角Radians = (double)Time.GetHo

6、ur() + (double)Time.GetMinute()/60.0 +(double)Time.GetSecond()/3600.0;Radians *= 6.28/12.0;/創(chuàng)建時(shí)鐘指針畫筆CPen HourPen(PS_SOLID,5,RGB(0,255,0);pDC->SelectObject(&HourPen);/繪制時(shí)鐘指針線pDC->MoveTo(CenterX,CenterY);pDC->LineTo(CenterX + (int)(double)(CenterX/3)*sin(Radians),CenterY - (int)(double)(C

7、enterY/3)*cos(Radians);Radians = (double)Time.GetMinute()+(double)Time.GetSecond()/60.0;Radians *= 6.28/60.0;/創(chuàng)建分鐘指針畫筆CPen MinutePen(PS_SOLID,3,RGB(0,0,255);pDC->SelectObject(&MinutePen);/繪制分鐘指針線pDC->MoveTo(CenterX,CenterY);pDC->LineTo(CenterX + (int)(double)(CenterX*2)/3)*sin(Radians),

8、CenterY - (int)(double)(CenterY*2/3)*cos(Radians);Radians = (double)Time.GetSecond();Radians *= 6.28/60.0;/創(chuàng)建秒鐘指針畫筆CPen SecondPen(PS_SOLID,1,RGB(255,0,255);pDC->SelectObject(&SecondPen);/繪制秒鐘指針線pDC->MoveTo(CenterX,CenterY);pDC->LineTo(CenterX + (int)(double)(CenterX*4)/5)*sin(Radians),CenterY - (int)(double)(CenterY*4)/5*cos(Radians);pDC->SelectObject(OldPen);>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>&