题目来自http://zhidao.baidu.com/link?url=BgmQYddgQ3nhe4fotyX-zusLuuMYxsL_zFd8zraGp9bjHBFopJXxYqwLhL_6N11y2v15wBAtdALqsxVxX7gEa_
/*-------------------------------------------------- hellwin.c-display "hellowinxp" in the screen ---------------------------------------------------*/ #include "windows.h" LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM); int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow ) { static TCHAR szAppName[]=TEXT("hello winxp"); HWND hwnd; MSG msg; WNDCLASS wndclass; wndclass.style =CS_HREDRAW|CS_VREDRAW; wndclass.lpfnWndProc =WndProc; wndclass.cbClsExtra =0; wndclass.cbWndExtra =0; wndclass.hbrBackground =(HBRUSH)GetStockObject(WHITE_BRUSH); wndclass.hCursor =LoadCursor(NULL,IDC_HAND); wndclass.hIcon =LoadIcon(NULL,IDI_APPLICATION); wndclass.hInstance =hInstance; wndclass.lpszClassName =szAppName; wndclass.lpszMenuName =NULL; if(!RegisterClass(&wndclass)) { MessageBox(NULL,TEXT("windows NT required"),szAppName,MB_ICONERROR); return 0; } hwnd=CreateWindow( szAppName, TEXT("the hello winxp program"), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL); ShowWindow(hwnd,nCmdShow); UpdateWindow(hwnd); while(GetMessage(&msg,NULL,0,0)) { 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("c:\\hell.wav"),NULL,SND_FILENAME|SND_ASYNC); //这里有问题 return 0; case WM_PAINT: hdc=BeginPaint(hwnd,&ps); GetClientRect(hwnd,&rect); DrawText(hdc,TEXT("hello winxp"),-1,&rect,DT_SINGLELINE|DT_CENTER|DT_VCENTER); EndPaint(hwnd,&ps); return 0; case WM_DESTROY: PostQuitMessage(0); return 0; } return DefWindowProc(hwnd,message,wParam,lParam); } 编译出现如此错误提示：1>hellowinxp.obj : error LNK2019: unresolved external symbol __imp__PlaySoundW@12 referenced in function "long __stdcall WndProc(struct HWND__ *,unsigned int,unsigned int,long)" (?WndProc@@YGJPAUHWND__@@IIJ@Z) 1>D:\myprj\mszjk\hellowinxp\Debug\hellowinxp.exe : fatal error LNK1120: 1 unresolved externals 最好能翻译下错误代码。解释一下具体原因，拷贝的别来了。我试过几乎没用。谢谢是的，有效，但我想知道具体解释。
下面是我在百度上面找到的答案可信的。这是因为playsound是在winmm.lib当中，这个文件在Vc中，系统不会默认添加需要手动添加的。即采用#pragma comment添加的。具体见：http://blog.csdn.net/zhouyelihua/article/details/12625631
#include "windows.h" 在这后面添加一句这个：#pragma comment( lib,"winmm.lib")试试看吧。因为PlaySound的函数声明你能看见，但是定义是放在库文件中的，所以应该导入库文件，这样你的程序才能看到函数的定义而不仅仅是声明。
