1 #include<windows.h>
2 LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);
3 int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,
4 PSTR szCmdLine,int iCmdShow)
5 {
6 static TCHAR szAppName[]=TEXT("AltWind");
7 HWND hwnd;
8 MSG msg;
9 WNDCLASS wndclass;
10 wndclass.style=CS_HREDRAW|CS_VREDRAW;
11 wndclass.lpfnWndProc=WndProc;
12 wndclass.cbClsExtra=0;
13 wndclass.cbWndExtra=0;
14 wndclass.hInstance=hInstance;
15 wndclass.hIcon=LoadIcon(NULL,IDI_APPLICATION);
16 wndclass.hCursor=LoadCursor(NULL,IDC_ARROW);
17 wndclass.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);
18 wndclass.lpszMenuName=NULL;
19 wndclass.lpszClassName=szAppName;
20
21
22 if(!RegisterClass(&wndclass))
23 {
24 MessageBox(NULL,TEXT("Program requires Windows NT!"),
25 szAppName,MB_ICONERROR);
26 return 0;
27 }
28 hwnd=CreateWindow(szAppName,TEXT("Altermate and winding FillModes"),
29 WS_OVERLAPPEDWINDOW,
30 CW_USEDEFAULT,CW_USEDEFAULT,
31 CW_USEDEFAULT,CW_USEDEFAULT,
32 NULL,NULL,hInstance,NULL);
33 ShowWindow(hwnd,iCmdShow);
34 UpdateWindow(hwnd);
35 while(GetMessage(&msg,NULL,0,0))
36 {
37 TranslateMessage(&msg);
38 DispatchMessage(&msg);
39 }
40 return msg.wParam;
41 }
42 LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam)
43 {
44 static POINT aptFigure[10]={10,70,50,70,50,10,90,10,90,50,
45 30,50,30,90,70,90,70,30,10,30};
46 static int cxClient,cyClient;
47
48 HDC hdc;
49 int i;
50 PAINTSTRUCT ps;
51 POINT apt[10];
52
53 switch(message)
54 {
55 case WM_SIZE:
56 cxClient=LOWORD(lParam);
57 cyClient=HIWORD(lParam);
58 return 0;
59 case WM_PAINT:
60 hdc=BeginPaint(hwnd,&ps);
61 SelectObject(hdc,GetStockObject(GRAY_BRUSH));
62
63 for(i=0;i<10;i++)
64 {
65 apt[i].x=cxClient*aptFigure[i].x/200;
66 apt[i].y=cyClient*aptFigure[i].y/100;
67 }
68 SetPolyFillMode(hdc,ALTERNATE);
69 Polygon(hdc,apt,10);
70 for(i=0;i<10;i++)
71 {
72 apt[i].x+=cxClient/2;
73 }
74 SetPolyFillMode(hdc,WINDING);
75 Polygon(hdc,apt,10);
76
77 EndPaint(hwnd,&ps);
78 return 0;
79 case WM_DESTROY:
80 PostQuitMessage(0);
81 return 0;
82 }
83 return DefWindowProc(hwnd,message,wParam,lParam);
84 }
