include

//声明窗口过程函数
LRESULT CALLBACK WinSunProc(

HWND hwnd,  //窗口句柄
UINT uMsg,  //消息
WPARAM wParam,  //附加参数1
LPARAM lParam   //附加参数2
);

int WinMain(

__in HINSTANCE hInstance,//当前程序的实例句柄，找到本进程的内存
__in_opt HINSTANCE hPrevInstance,  //前一个实例句柄，已经废弃，一般为NULL
__in LPSTR lpCmdLine, //命令行参数字符串
__in int nShowCmd //窗口的显示方式：最大化，最小化，原样。
)

{

const char* ClassName = "HappyTeemo";
//设计窗口类
WNDCLASS wndcls;
wndcls.style = CS_HREDRAW | CS_VREDRAW;
wndcls.lpfnWndProc = WinSunProc;
wndcls.cbClsExtra = 0;
wndcls.cbWndExtra = 0;
wndcls.hInstance = hInstance;
wndcls.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
wndcls.hCursor = LoadCursor(NULL,IDC_CROSS);
wndcls.hIcon = LoadIcon(NULL,IDI_ERROR);
wndcls.lpszClassName = ClassName;
wndcls.lpszMenuName = NULL;
RegisterClass(&wndcls);//注册窗口类
//创建窗口
HWND hwnd;
hwnd = CreateWindow  
(ClassName,"HappyTeemoFirstWindow",WS_OVERLAPPEDWINDOW,0,0,600,400,NULL,NULL,hInstance,NULL);
//显示和刷新窗口
ShowWindow(hwnd,SW_SHOWNORMAL);
UpdateWindow(hwnd);
//定义消息结构体，开始消息循环
MSG msg;
while(GetMessage(&msg,NULL,0,0))
{
    TranslateMessage(&msg);
    DispatchMessage(&msg);
}
return msg.wParam;

}

//窗口过程函数
LRESULT CALLBACK WinSunProc(

HWND hwnd,      
UINT uMsg,      
WPARAM wParam,  
LPARAM lParam   
)

{

switch(uMsg)
{
case WM_CHAR: //按下字符键
    char szChar[200];
    sprintf(szChar,"char is %d",wParam);
    MessageBox(hwnd,szChar,"HappyTeemo",0);
    break;
case WM_LBUTTONDOWN://鼠标左键
    MessageBox(hwnd,"mouse clicked","HappyTeemo",0);
    HDC hdc;
    hdc=GetDC(hwnd);
    TextOut(hdc,0,50,"HappyTeemo",strlen("HappyTeemo"));
    ReleaseDC(hwnd,hdc);
    break;
case WM_PAINT: //重绘
    HDC hDC;
    PAINTSTRUCT ps;
    hDC=BeginPaint(hwnd,&ps);
    TextOut(hDC,0,0,"HappyTeemo",strlen("HappyTeemo"));
    EndPaint(hwnd,&ps);
    break;
case WM_CLOSE://关闭
    if(IDYES==MessageBox(hwnd,"Close?","HappyTeemo",MB_YESNO))
    {
        DestroyWindow(hwnd);
    }
    break;
case WM_DESTROY://销毁
    PostQuitMessage(0);
    break;
default:
    return DefWindowProc(hwnd,uMsg,wParam,lParam);
}
return 0;

}

/** 窗口类的结构体 typedef struct _WNDCLASS { UINT style;// 窗口样式 WNDPROC lpfnWndProc;//窗口处理函数，函数指针 int cbClsExtra;//附加内存，一般为0，为了开缓冲区 int cbWndExtra;//窗口附加内存，一般也为0，为了开缓冲区 HINSTANCE hInstance;//实例句柄 HICON hIcon;//窗口的图标句柄 HCURSOR hCursor;//窗口鼠标光标 HBRUSH hbrBackground;//窗口背景色 LPCTSTR lpszMenuName;//窗口菜单名 LPCTSTR lpszClassName;// 窗口类名 } WNDCLASS, LPWNDCLASS; **/

/** //MSG结构体： typedef struct tagMSG { HWND hwnd; //句柄，属于哪个窗口的 UINT message; //消息，不同数值表示不同消息 WPARAM wParam; //附加信息1 LPARAM lParam; //附加信息2 DWORD time; //时间 POINT pt; //鼠标位置 } MSG; */

/** HWND CreateWindow( LPCTSTR lpClassName, // registered class name，注册类的名字 LPCTSTR lpWindowName, // window name，标题栏名字 DWORD dwStyle, // window style，风格 int x, // horizontal position of window，窗口左上角x坐标 int y, // vertical position of window，窗口左上角y坐标 int nWidth, // window width，宽 int nHeight, // window height，高 HWND hWndParent, // handle to parent or owner window，父窗口句柄 HMENU hMenu, // menu handle or child identifier，菜单句柄 HINSTANCE hInstance, // handle to application instance，实例句柄 LPVOID lpParam // window-creation data，附加参数 ); */

窗口类的类别：