>_<:这是一个时钟小程序
>_<:通过调用获得系统时间然后经过计算得出当前时间，然后再以3个圆环表示时分秒。
>_<:TAO_CLOCK.h
1 class CMyApp : public CWinApp
2 {
3 public:
4 virtual BOOL InitInstance ();
5 };
6
7 class CMainWindow : public CFrameWnd
8 {
9 protected:
10
11
12 int m_nPrevSecond;
13 int m_nPrevMinute;
14 int m_nPrevHour;
15
16 void Draw(CDC* pDC, int nLength, int nDegrees,
17 COLORREF clrColor);//绘制针
18 void DrawQ(CDC* pDC, int nLength, COLORREF clrColor);//圈遮盖
19
20 public:
21 CMainWindow ();
22
23 protected:
24 afx_msg int OnCreate (LPCREATESTRUCT lpcs); //设置计时器
25 afx_msg void OnTimer (UINT nTimerID); //当WM_TIMER消息到达后就得到当前时间....
26 afx_msg void OnPaint ();
27 afx_msg void OnClose (); //清楚计时器
28
29 DECLARE_MESSAGE_MAP ()
30 };
>_<:TAO_CLOCK.cpp
1 #include <afxwin.h>
2 #include <math.h>
3 #include "TAO_CLOCK.h"
4
5 #define SQUARESIZE 20
6 #define ID_TIMER_CLOCK 1
7 #define kuan 60
8 #define miaoL 200
9 #define fenL miaoL-kuan
10 #define shiL fenL-kuan
11
12 CMyApp myApp;
13
14 /////////////////////////////////////////////////////////////////////////
15 // CMyApp member functions
16
17 BOOL CMyApp::InitInstance ()
18 {
19 SetRegistryKey (_T ("Programming Windows with MFC"));
20 m_pMainWnd = new CMainWindow;
21 m_pMainWnd->ShowWindow (m_nCmdShow);
22 m_pMainWnd->UpdateWindow ();
23 return TRUE;
24 }
25
26 /////////////////////////////////////////////////////////////////////////
27 // CMainWindow message map and member functions
28
29 BEGIN_MESSAGE_MAP (CMainWindow, CFrameWnd)
30 ON_WM_CREATE ()
31 ON_WM_PAINT ()
32 ON_WM_TIMER ()
33 ON_WM_CLOSE ()
34 END_MESSAGE_MAP ()
35
36 CMainWindow::CMainWindow ()
37 {
38
39 //得到系统时间，然后初始化时分秒
40 CTime time = CTime::GetCurrentTime ();
41 m_nPrevSecond = time.GetSecond ();
42 m_nPrevMinute = time.GetMinute ();
43 m_nPrevHour = time.GetHour () % 12;
44
45 CString strWndClass = AfxRegisterWndClass (
46 CS_HREDRAW | CS_VREDRAW,
47 myApp.LoadStandardCursor (IDC_ARROW),
48 (HBRUSH) (COLOR_3DFACE + 1),
49 NULL
50 );
51
52 Create (strWndClass, _T ("Life_leving"));
53 }
54
55
56 int CMainWindow::OnCreate (LPCREATESTRUCT lpcs)
57 {
58 if (CFrameWnd::OnCreate (lpcs) == -1)
59 return -1;
60
61 //
62 // Set a timer to fire at 1-second intervals.
63 //
64 if (!SetTimer (ID_TIMER_CLOCK, 1000, NULL)) {
65 MessageBox (_T ("SetTimer failed"), _T ("Error"),
66 MB_ICONSTOP | MB_OK);
67 return -1;
68 }
69
70 return 0;
71 }
72
73 void CMainWindow::OnClose ()
74 {
75 KillTimer (ID_TIMER_CLOCK);
76 CFrameWnd::OnClose ();
77 }
78
79
80 //当WM_TIMER消息到达后，它就得到当前时间，
81 //他将时分秒分别与成员变量记录的时分秒比较
82 //如果相同不会执行任何操作，否则将记录新时间
83 //并移动Clock的指针
84 void CMainWindow::OnTimer (UINT nTimerID)
85 {
86 /*判断窗口当前是否最小化，最小化返回非0
87 可以减小CPU负担isZoomed()判断最大化
88 但是在任务栏鼠标靠近时不显示时钟走动效果
89 if (IsIconic ())
90 return;
91 */
92
93 //获取当前时间并与记录时间比较，一样不做任何处理
94 CTime time = CTime::GetCurrentTime ();
95 int nSecond = time.GetSecond ();
96 int nMinute = time.GetMinute ();
97 int nHour = time.GetHour () % 12;
98
99 if ((nSecond == m_nPrevSecond) &&
100 (nMinute == m_nPrevMinute) &&
101 (nHour == m_nPrevHour))
102 return;
103
104 //最小化时显示数字时钟
105 if(IsIconic()){
106 CString time;
107 time.Format(_T("%0.2d: %0.2d: %0.2d"),nHour,nMinute,nSecond);
108 SetWindowText(time);
109 return;
110 }
111 SetWindowText(_T("Life_leving"));
112
113 //MM_ISOTROPIC:X轴和Y轴具有相同的逻辑单位（映射）
114 //设置每个方向上设置具有1000个单位
115 //把原点移至中心
116 CRect rect;
117 GetClientRect (&rect);
118
119 CClientDC dc (this);
120 dc.SetMapMode (MM_ISOTROPIC);
121 dc.SetWindowExt (1000, 1000);
122 dc.SetViewportExt (rect.Width (), -rect.Height ());
123 dc.SetViewportOrg (rect.Width () / 2, rect.Height () / 2);
124
125 //
126 // If minutes have changed, erase the hour and minute hands.
127 //
128 COLORREF clrColor = ::GetSysColor (COLOR_3DFACE);
129
130
131
132 if (nMinute != m_nPrevMinute) {
133 m_nPrevMinute = nMinute;//更新时分
134 m_nPrevHour = nHour;
135 }
136
137 //
138 // If seconds have changed, erase the second hand and redraw all hands.
139 //
140 if (nSecond != m_nPrevSecond) {
141 CRect rect(-5000,5000,5000,-5000);
142 CBrush brush(clrColor);
143 CBrush* pOldBrush=dc.SelectObject(&brush);
144 dc.Rectangle(rect);
145 dc.SelectObject(pOldBrush);
146 Draw(&dc,miaoL, nSecond * 6, RGB (255, 0, 0));//每秒走6度
147 Draw(&dc,shiL, (nHour * 30) + (nMinute / 2),//每小时30度+每分钟0.5度
148 RGB (0, 0, 255));
149 Draw(&dc, fenL, nMinute * 6, RGB (0, 255, 0));//每分钟6度
150 m_nPrevSecond = nSecond;//更新秒
151 }
152
153 //if(nSecond==0)DrawQ(&dc,miaoL,clrColor);
154 //if(nMinute==0)DrawQ(&dc,fenL,clrColor);
155 //if(nHour==0)DrawQ(&dc,shiL,clrColor);
156
157 }
158
159 void CMainWindow::OnPaint ()
160 {
161 //重绘的时候也要重新设定窗口映射
162 CRect rect;
163 GetClientRect (&rect);
164
165 CPaintDC dc (this);
166 dc.SetMapMode (MM_ISOTROPIC);
167 dc.SetWindowExt (1000, 1000);
168 dc.SetViewportExt (rect.Width (), -rect.Height ());
169 dc.SetViewportOrg (rect.Width () / 2, rect.Height () / 2);
170
171 //画上钟面+时分秒针
172 Draw(&dc,shiL, (m_nPrevHour * 30) +
173 (m_nPrevMinute / 2), RGB (0, 0, 255));
174 Draw(&dc,fenL, m_nPrevMinute * 6, RGB (0, 255, 0));
175 Draw(&dc,miaoL, m_nPrevSecond * 6, RGB (255, 0, 0));
176
177 COLORREF clrColor = ::GetSysColor (COLOR_3DFACE);
178
179 }
180
181
182
183 //画秒针
184 void CMainWindow::Draw (CDC* pDC, int nLength ,
185 int nDegrees, COLORREF clrColor)
186 {
187 CPoint point[2];
188 CRect rect(-(nLength+kuan),(nLength+kuan),(nLength+kuan),-(nLength+kuan));
189
190 double nRadians = (double) nDegrees * 0.017453292;//转化为弧度制
191
192 point[0].x = 0;
193 point[0].y = 900;
194 point[1].x = (int) ((nLength+600) * sin (nRadians));//注意转换（坐标系变换）
195 point[1].y = (int) ((nLength+600) * cos (nRadians));
196
197 CPen pen (PS_SOLID,kuan, clrColor);
198 CPen* pOldPen = pDC->SelectObject (&pen);
199
200 pDC->Arc(rect,point[1],point[0]);
201
202 pDC->SelectObject (pOldPen);
203 }
204
205 //画圈
206 void CMainWindow::DrawQ (CDC* pDC, int nLength, COLORREF clrColor){
207
208 CRect rect(-(nLength+kuan),(nLength+kuan),(nLength+kuan),-(nLength+kuan));
209 CPen pen (PS_SOLID,kuan, clrColor);
210 CBrush brush(clrColor);
211 CPen* pOldPen = pDC->SelectObject (&pen);
212 CBrush* pOldBrush = pDC->SelectObject (&brush);
213 pDC->Ellipse(rect);
214 Draw(pDC,shiL, (m_nPrevHour * 30) + (m_nPrevMinute / 2),//每小时30度+每分钟0.5度
215 RGB (0, 0, 255));
216 Draw(pDC, fenL, m_nPrevMinute * 6, RGB (0, 255, 0));//每分钟6度
217 pDC->SelectObject (pOldPen);
218 pDC->SelectObject (pOldBrush);
219 }
[游戏学习28] MFC 时钟,布布扣,bubuko.com
时间： 2024-10-13 07:51:17