c创建win窗口

windows程序设计示例：

 #include "windows.h"
 #pragma comment(lib, "winmm")

 LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);

 int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow)
 {
     static TCHAR szAppName[] = TEXT("HELLO WIN");
     HWND hwnd;
     MSG msg;
     WNDCLASS wndclass;

     wndclass.style = CS_HREDRAW | CS_VREDRAW;
     wndclass.lpfnWndProc = WndProc;
     wndclass.cbClsExtra = ;
     wndclass.cbWndExtra = ;
     wndclass.hInstance = hInstance;
     wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
     wndclass.hCursor = LoadCursor(NULL, IDC_HAND);
     wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
     wndclass.lpszMenuName = NULL;
     wndclass.lpszClassName = szAppName;

     if (!RegisterClass(&wndclass))
     {
         MessageBox(NULL, TEXT("ERROR"), TEXT(szAppName), MB_ICONERROR);
         return ;
     }

     hwnd = CreateWindow(szAppName,
         TEXT("HELLO WORLD"),
         WS_OVERLAPPEDWINDOW,
         CW_USEDEFAULT,
         CW_USEDEFAULT,
         ,
         ,
         NULL,
         NULL,
         hInstance,
         NULL);
     ShowWindow(hwnd, iCmdShow);
     UpdateWindow(hwnd);

     while (GetMessage(&msg,NULL,,))
     {
         TranslateMessage(&msg);
         DispatchMessage(&msg);
     }

     return msg.wParam;
 }

 LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam)
 {
     HDC hdc;
     PAINTSTRUCT ps;
     RECT rect;

     switch (message)
     {
     case WM_CREATE:
         PlaySound(TEXT("hellowin.wav"), NULL, SND_FILENAME | SND_ASYNC);
         return ;
     case WM_PAINT:
         hdc = BeginPaint(hwnd, &ps);
         GetClientRect(hwnd, &rect);
         DrawText(hdc, TEXT("HELLO WIN8"), -, &rect, DT_SINGLELINE | DT_CENTER | DT_VCENTER);
         EndPaint(hwnd, &ps);
         return ;
     case WM_DESTROY:
         PostQuitMessage();
         return ;
     }
     return DefWindowProc(hwnd, message, wparam, lparam);
 }

创建步骤：

1.创建一个WNDCLASS结构体

2.使用RegisterClass注册结构体

3.调用CreateWindow创建窗体并将句柄赋值给一个HWND结构体

4.调用ShowWindow显示窗体

5.调用UpdateWindow更新窗体

6.执行消息循环，使用GetMessage获取消息，使用TranslateMessage转换消息，使用DispatchMessage分发消息

PS:

如果不加#pragma comment(lib, "winmm")，会报错

错误 1 error LNK2019: 无法解析的外部符号 __imp__PlaySoundA@12，该符号在函数 _WndProc@16 中被引用 E:\Project\CWin\CWin\main.obj CWin

另外一种解决方法，项目-属性-链接器-输入-附加依赖项中添加winmm.lib

原因：调用了一个多媒体函数，而多媒体对象库并未包含在默认项目内