windows编程：第一个windows程序

 1 #define WIN32_LEAN_AND_MEAN
 2 #include <windows.h>
 3 #include <windowsx.h>
 4 #include <math.h>
 5 #define WINDOW_CLASS_NAME L"WINCLASS1"
 6 //窗口处理函数
 7 LRESULT CALLBACK WindowProc(HWND hwnd,
 8     UINT msg,
 9     WPARAM wParam,
10     LPARAM lPram)
11 {
12     PAINTSTRUCT ps;
13     HDC hdc;
14     switch (msg)
15     {
16     case WM_CREATE:
17     {
18                       return 0;
19     }break;
20     case WM_PAINT:
21     {
22                      hdc = BeginPaint(hwnd, &ps);
23                      EndPaint(hwnd, &ps);
24                      return 0;
25     }break;
26     default:break;
27     }
28     return DefWindowProc(hwnd, msg, wParam, lPram);
29 }
30 void GameMain()
31 {
32     return;
33 }
34 int WINAPI WinMain(HINSTANCE hInstance,
35     HINSTANCE hPrevInstance,
36     LPSTR lpCmdLine,
37     int nCmdShow)
38 {
39     //定义窗口类
40     WNDCLASSEX winClass;
41     HWND hWnd;
42     MSG msg;
43     //填充窗口类的个成员
44     winClass.cbSize = sizeof(WNDCLASSEX);
45     winClass.style = CS_DBLCLKS | CS_OWNDC | CS_HREDRAW | CS_VREDRAW;
46     winClass.lpfnWndProc = WindowProc;    //窗口消息处理函数
47     winClass.cbClsExtra = 0;
48     winClass.cbWndExtra = 0;
49     winClass.hInstance = hInstance;
50     winClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
51     winClass.hCursor = LoadCursor(NULL, IDC_ARROW);
52     winClass.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
53     winClass.lpszMenuName = NULL;
54     winClass.lpszClassName = WINDOW_CLASS_NAME;        //窗口类名
55     winClass.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
56 
57     //注册窗口类
58     if (!RegisterClassEx(&winClass))
59     {
60         return 0;
61     }
62 
63     //创建窗口类的一个成员
64     if (!(hWnd = CreateWindowEx(NULL,
65         WINDOW_CLASS_NAME,
66         L"hello world",
67         WS_OVERLAPPEDWINDOW | WS_VISIBLE,
68         0, 0,
69         640, 480,
70         NULL,
71         NULL,
72         hInstance,
73         NULL)))
74     {
75         return 0;
76     }
77 
78     //消息循环
79     while (true)
80     {
81         if (PeekMessage(&msg, hWnd, 0, 0, PM_REMOVE))
82         {
83             if (msg.message == WM_QUIT)
84             {
85                 break;
86             }
87             TranslateMessage(&msg);
88             DispatchMessage(&msg);
89         }
90         GameMain();
91     }
92     return msg.wParam;
93 }