我想知道我哪里弄错了

棠师 sal

1. #include<windows.h>
   
2. 
   
3. #include<math.h>
   
4. 
   
5. #define ID_TIMER 1
   
6. 
   
7. #define TWOPI (2*3.14159)
   
8. 
   
9. LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);
   
10. 
    
11. int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR szCmdLine,int iCmdShow)
    
12. 
    
13. {
    
14. 
    
15. static TCHAR szAppName[]=TEXT("Clock");
    
16. 
    
17. HWND hwnd;
    
18. 
    
19. MSG msg;
    
20. 
    
21. WNDCLASS wndclass;
    
22. 
    
23. wndclass.cbClsExtra=0;
    
24. 
    
25. wndclass.cbWndExtra=0;
    
26. 
    
27. wndclass.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);
    
28. 
    
29. wndclass.hCursor=LoadCursor(NULL,IDC_ARROW);
    
30. 
    
31. wndclass.hIcon=LoadIcon(NULL,IDI_APPLICATION);
    
32. 
    
33. wndclass.hInstance=hInstance;
    
34. 
    
35. wndclass.lpfnWndProc=WndProc;
    
36. 
    
37. wndclass.lpszClassName=szAppName;
    
38. 
    
39. wndclass.lpszMenuName=NULL;
    
40. 
    
41. wndclass.style=CS_HREDRAW|CS_VREDRAW;
    
42. 
    
43. if(!RegisterClass(&wndclass))
    
44. 
    
45. {
    
46. 
    
47. MessageBox(NULL,TEXT("This program requires Windows T"),szAppName,MB_ICONERROR);
    
48. 
    
49. return 0;
    
50. 
    
51. }
    
52. 
    
53. hwnd=CreateWindow(szAppName,TEXT("Analog Clock"),WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hInstance,NULL);
    
54. 
    
55. ShowWindow(hwnd,iCmdShow);
    
56. 
    
57. UpdateWindow(hwnd);
    
58. 
    
59. while(GetMessage(&msg,NULL,0,0))
    
60. 
    
61. {
    
62. 
    
63. TranslateMessage(&msg);
    
64. 
    
65. DispatchMessage(&msg);
    
66. 
    
67. }
    
68. 
    
69. return msg.wParam;
    
70. 
    
71. }
    
72. 
    
73. void Setsotropic(HDC hdc,int cxClient,int cyClient)
    
74. 
    
75. {
    
76. 
    
77. SetMapMode(hdc,MM_ISOTROPIC);
    
78. 
    
79. SetWindowExtEx(hdc,1000,1000,NULL);
    
80. 
    
81. SetViewportExtEx(hdc,cxClient/2,-cyClient/2,NULL);
    
82. 
    
83. SetViewportOrgEx(hdc,cxClient/2,cyClient/2,NULL);
    
84. 
    
85. }
    
86. 
    
87. void RotatePoint(POINT pt[],int iNum,int iAngle)
    
88. 
    
89. {
    
90. 
    
91. int i;
    
92. 
    
93. POINT ptTemp;
    
94. 
    
95. for(i=0;i<iNum;i++)
    
96. 
    
97. {
    
98. 
    
99. ptTemp.x=(int)(pt[i].x*cos(TWOPI*iAngle/360)+pt[i].y*sin(TWOPI*iAngle/360));
    
100. 
     
101. ptTemp.y=(int)(pt[i].y*cos(TWOPI*iAngle/360)+pt[i].x*sin(TWOPI*iAngle/360));
     
102. 
     
103. pt[i]=ptTemp;
     
104. 
     
105. }
     
106. 
     
107. }
     
108. 
     
109. void DrawClock(HDC hdc)
     
110. 
     
111. {
     
112. 
     
113. int iAngle;
     
114. 
     
115. POINT pt[3];
     
116. 
     
117. for(iAngle=0;iAngle<360;iAngle+=6)
     
118. 
     
119. {
     
120. 
     
121. pt[0].x=0;
     
122. 
     
123. pt[0].y=900;
     
124. 
     
125. RotatePoint(pt,1,iAngle);
     
126. 
     
127. pt[2].x=pt[2].y=iAngle%5?33:100;
     
128. 
     
129. pt[0].x-=pt[2].x/2;
     
130. 
     
131. pt[0].y-=pt[2].y/2;
     
132. 
     
133. pt[1].x=pt[0].x+pt[2].x;
     
134. 
     
135. pt[1].y=pt[0].y+pt[2].y;
     
136. 
     
137. SelectObject(hdc,GetStockObject(BLACK_BRUSH));
     
138. 
     
139. Ellipse(hdc,pt[0].x,pt[0].y,pt[1].x,pt[1].y );
     
140. 
     
141. }
     
142. 
     
143. }
     
144. 
     
145. void DrawHands(HDC hdc,SYSTEMTIME *pst,BOOL fChange)
     
146. 
     
147. {
     
148. 
     
149. static POINT pt[3][5]={0,-150,100,0,0,600,-100,0,0,-150, 0,-200,50,0,0,800,-50,0,0,-200, 0,0,0,0,0,0,0,0,0,800 };
     
150. 
     
151. int i,iAngle[3];
     
152. 
     
153. POINT ptTemp[3][5];
     
154. 
     
155. iAngle[0]=(pst->wHour*30)%360+pst->wMinute/2;
     
156. 
     
157. iAngle[1]=pst->wMinute*6;
     
158. 
     
159. iAngle[2]=pst->wSecond*6;
     
160. 
     
161. memcpy(ptTemp,pt,sizeof(pt));
     
162. 
     
163. for(i=fChange?0:2;i<3;i++)
     
164. 
     
165. {
     
166. 
     
167. RotatePoint(ptTemp[i],5,iAngle[i]);
     
168. 
     
169. Polyline(hdc,ptTemp[i],5);
     
170. 
     
171. }
     
172. 
     
173. }
     
174. 
     
175. LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam)
     
176. 
     
177. {
     
178. 
     
179. static int cxClient,cyClient;
     
180. 
     
181. static SYSTEMTIME stPrevious;
     
182. 
     
183. BOOL fChange;
     
184. 
     
185. HDC hdc;
     
186. 
     
187. PAINTSTRUCT ps;
     
188. 
     
189. SYSTEMTIME st;
     
190. 
     
191. switch(message)
     
192. 
     
193. {
     
194. 
     
195. case WM_CREATE:
     
196. 
     
197. SetTimer(hwnd,ID_TIMER,1000,NULL);
     
198. 
     
199. GetLocalTime(&st);
     
200. 
     
201. stPrevious=st;
     
202. 
     
203. return 0;
     
204. 
     
205. case WM_SIZE:
     
206. 
     
207. cxClient=LOWORD(lParam);
     
208. 
     
209. cyClient=HIWORD(lParam);
     
210. 
     
211. return 0;
     
212. 
     
213. case WM_TIMER:
     
214. 
     
215. GetLocalTime(&st);
     
216. 
     
217. fChange=st.wHour!=stPrevious.wHour||st.wMinute!=stPrevious.wMinute;
     
218. 
     
219. hdc=GetDC(hwnd);
     
220. 
     
221. Setsotropic(hdc,cxClient,cyClient);
     
222. 
     
223. SelectObject(hdc,GetStockObject(WHITE_PEN));
     
224. 
     
225. DrawHands(hdc,&stPrevious,fChange);
     
226. 
     
227. SelectObject(hdc,GetStockObject(BLACK_PEN));
     
228. 
     
229. DrawHands(hdc,&st,TRUE);
     
230. 
     
231. stPrevious=st;
     
232. 
     
233. return 0;
     
234. 
     
235. case WM_PAINT:
     
236. 
     
237. hdc=BeginPaint(hwnd,&ps);
     
238. 
     
239. Setsotropic(hdc,cxClient,cyClient);
     
240. 
     
241. DrawClock(hdc);
     
242. 
     
243. DrawHands(hdc,&stPrevious,TRUE);
     
244. 
     
245. EndPaint(hwnd,&ps);
     
246. 
     
247. return 0;
     
248. 
     
249. case WM_DESTROY:
     
250. 
     
251. KillTimer(hwnd,ID_TIMER);
     
252. 
     
253. PostQuitMessage(0);
     
254. 
     
255. return 0;
     
256. 
     
257. }
     
258. return DefWindowProc(hwnd,message,wParam,lParam);
     
259. }
     

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