学步园

源自：http://blog.csdn.net/chenqiai0/article/details/8045123

Win32编程---实现点,线,面的绘制

1. #include <windows.h>  
2. #include   <string>     
3. using   namespace   std;  
4.   
5. //----------函数声明---------------  
6. void init(HWND hWnd,HINSTANCE hInstance);  
7. void pix(HWND &hWnd,HDC &hDC,HBRUSH &NewBrush,PAINTSTRUCT &Ps);//画点,也就是像素输出  
8. void rect(HWND &hWnd,HDC &hDC,HBRUSH &NewBrush,PAINTSTRUCT &Ps);//----画矩形----  
9. void fillrect(HWND &hWnd,HDC &hDC,HBRUSH &NewBrush,RECT &r,PAINTSTRUCT &Ps);//填充矩形  
10. void linerect(HWND &hWnd,HDC &hDC,HBRUSH &NewBrush,RECT &r,PAINTSTRUCT &Ps);//线框矩形  
11. void triangle(HWND &hWnd,HDC &hDC,HBRUSH &NewBrush,POINT Pt[3],PAINTSTRUCT &Ps);//三角形  
12. void ellipse(HWND &hWnd,HDC &hDC,HBRUSH &NewBrush,RECT &r,PAINTSTRUCT &Ps);//椭圆  
13. void DrawContent(HWND hWnd);  
14.   
15. //-----回调函数-----------------  
16. LRESULT CALLBACK WindProcedure(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam);  
17.   
18. INT WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,  
19.                    LPSTR lpCmdLine, int nCmdShow)  
20. {  
21.       
22.     WNDCLASSEX  WndCls;  
23.   
24.     MSG         Msg;  
25.     WndCls.cbSize        = sizeof(WndCls);  
26.     WndCls.style         = CS_OWNDC | CS_VREDRAW | CS_HREDRAW;  
27.     WndCls.lpfnWndProc   = WindProcedure;  
28.     WndCls.cbClsExtra    = 0;  
29.     WndCls.cbWndExtra    = 0;  
30.     WndCls.hInstance     = hInstance;  
31.     WndCls.hIcon         = LoadIcon(NULL, IDI_APPLICATION);  
32.     WndCls.hCursor       = LoadCursor(NULL, IDC_ARROW);  
33.     WndCls.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);  
34.     WndCls.lpszMenuName  = NULL;  
35.     WndCls.lpszClassName = TEXT("MAIN");  
36.     WndCls.hIconSm       = LoadIcon(hInstance, IDI_APPLICATION);  
37.     RegisterClassEx(&WndCls);  
38.   
39.    HWND  hWnd=CreateWindowEx(WS_EX_OVERLAPPEDWINDOW,  
40.                    TEXT("MAIN"),TEXT( "陈琦"),  
41.                    WS_OVERLAPPEDWINDOW | WS_VISIBLE,  
42.                    CW_USEDEFAULT, CW_USEDEFAULT, 820, 820,  
43.                    NULL, NULL, hInstance, NULL);  
44.     init(hWnd,hInstance);  
45.     UpdateWindow(hWnd);  
46.     while( GetMessage(&Msg, NULL, 0, 0) )  
47.     {  
48.         TranslateMessage(&Msg);  
49.         DispatchMessage( &Msg);  
50.     }  
51.   
52.     return static_cast<int>(Msg.wParam);  
53. }  
54.        
55. void init(HWND hWnd,HINSTANCE hInstance)  
56. {   
57.     CreateWindow(  TEXT("BUTTON"),  TEXT("画点"),  WS_VISIBLE | WS_CHILD | BS_DEFPUSHBUTTON, 0, 0, 150,80, hWnd,NULL, hInstance, NULL);  
58.     CreateWindow(   TEXT("BUTTON"),  TEXT("矩形"),  WS_VISIBLE | WS_CHILD | BS_DEFPUSHBUTTON, 0, 90, 150,80, hWnd,NULL, hInstance, NULL);    
59.     CreateWindow(   TEXT("BUTTON"),  TEXT("填充矩形"),  WS_VISIBLE | WS_CHILD | BS_DEFPUSHBUTTON, 0, 180, 150,80, hWnd,NULL, hInstance, NULL);  
60.     CreateWindow(   TEXT("BUTTON"),  TEXT("线框矩形"),  WS_VISIBLE | WS_CHILD | BS_DEFPUSHBUTTON, 0, 270, 150,80, hWnd,NULL, hInstance, NULL);  
61.     CreateWindow(   TEXT("BUTTON"),  TEXT("三角形"),  WS_VISIBLE | WS_CHILD | BS_DEFPUSHBUTTON, 0, 360, 150,80, hWnd,NULL, hInstance, NULL);  
62.     CreateWindow(   TEXT("BUTTON"),  TEXT("椭圆"),  WS_VISIBLE | WS_CHILD | BS_DEFPUSHBUTTON, 0, 450, 150,80, hWnd,NULL, hInstance, NULL);  
63. }  
64.   
65. LRESULT CALLBACK WindProcedure(HWND hWnd, UINT Msg,WPARAM wParam, LPARAM lParam)  
66. {  
67.       
68.     HDC         hDC;  
69.     PAINTSTRUCT Ps;  
70.     HBRUSH      NewBrush;  
71.     RECT    r;  
72.     POINT Pt[3];  
73.   
74.     switch(Msg)  
75.     {  
76.     case WM_COMMAND:  
77.     HWND h;  
78.     h=FindWindowEx(hWnd ,NULL,TEXT("BUTTON"),TEXT("画点"));  
79.     if(DWORD(lParam)==int(h))  
80.     {  
81.         pix(hWnd,hDC,NewBrush,Ps);  
82.         break;  
83.     }  
84.   
85.     h=FindWindowEx(hWnd ,NULL,TEXT("BUTTON"),TEXT("矩形"));  
86.     if(DWORD(lParam)==int(h))  
87.     {  
88.         rect(hWnd,hDC,NewBrush,Ps);  
89.         break;  
90.     }  
91.   
92.     h=FindWindowEx(hWnd ,NULL,TEXT("BUTTON"),TEXT("填充矩形"));  
93.     if(DWORD(lParam)==int(h))  
94.     {  
95.         fillrect(hWnd,hDC,NewBrush,r,Ps);  
96.         break;  
97.     }  
98.   
99.     h=FindWindowEx(hWnd ,NULL,TEXT("BUTTON"),TEXT("线框矩形"));  
100.     if(DWORD(lParam)==int(h))  
101.     {