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问题点数：20 回复次数：5

C语言读取wav文件的问题，请大侠，编译问题。

代码如下：#include

#include

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

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,

PSTR szCmdLine, int iCmdShow)

{

static TCHAR szAppName[] = TEXT ("SineWave") ;

HWND          hwnd ;

MSG           msg ;

WNDCLASS      wndclass ;

wndclass.style        = CS_HREDRAW | CS_VREDRAW ;

wndclass.lpfnWndProc= WndProc ;

wndclass.cbClsExtra   = 0 ;

wndclass.cbWndExtra   = 0 ;

wndclass.hInstance    = hInstance ;

wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION) ;

wndclass.hCursor      = LoadCursor (NULL, IDC_ARROW) ;

wndclass.hbrBackground= (HBRUSH) GetStockObject (WHITE_BRUSH) ;

wndclass.lpszMenuName  = NULL ;

wndclass.lpszClassName = szAppName ;

if (!RegisterClass (&wndclass))

{

MessageBox (  NULL, TEXT ("Program requires Windows NT!"),

szAppName, MB_ICONERROR) ;

return 0 ;

}

hwnd = CreateWindow ( szAppName, TEXT ("Wave  13061128 李新"),

WS_OVERLAPPEDWINDOW,

CW_USEDEFAULT, CW_USEDEFAULT,

CW_USEDEFAULT, CW_USEDEFAULT,

NULL, NULL, hInstance, NULL) ;

ShowWindow (hwnd, iCmdShow) ;

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)

{

static int  cxClient, cyClient ;

HDC         hdc ;

PAINTSTRUCT ps ;

static int    i=1;

TEXTMETRIC    tm ;

static WORD    Channels;      //声道数目，1--单声道；2--双声道

static DWORD      SamplesPerSec ;//采样频率

static WORD    wBitsPerSample;      //每个采样需要的bit数

static DWORD   dwDataSize;  //去除ID和Size所占的字节数后剩下的其他字节数目

static long    size;

static    int    numbit;//一个样本的字节数；

static    int    num;//样本数

static  BYTE   *pData;

switch (message)

{

case WM_CREATE:

static HMMIO   file1;//定义HMMIO文件句柄；

file1=mmioOpen("13061128.wav",NULL,MMIO_READWRITE);//以读写模式打开所给的WAVE文件；

if(file1==NULL)

{

MessageBox(hwnd,"WAVE文件打开失败！","13061128",0);

return   NULL;

}

char   style[3];

while(mmioSeek(file1,i++,SEEK_SET)&&i<200)

{

mmioRead(file1,style,3);

if(style[0]=='f'&&style[1]=='m'&&style[2]=='t')

break;

}

//

mmioSeek(file1,i+9,SEEK_SET);

mmioRead(file1,style,2);

memcpy(&Channels,style,2);//声道

if(Channels==1)

MessageBox(hwnd,"单声道","13061128",0);

if(Channels==2)

MessageBox(hwnd,"双声道","13061128",0);

/

mmioSeek(file1,i+11,SEEK_SET);

mmioRead(file1,style,4);

memcpy(&SamplesPerSec,style,4);//采样频率

mmioSeek(file1,i+21,SEEK_SET);

mmioRead(file1,style,2);

memcpy(&wBitsPerSample,style,2);//每个采样需要的bit数

if(wBitsPerSample==8)

MessageBox(hwnd,"8位量化","13061128",0);/

if(wBitsPerSample==16)

MessageBox(hwnd,"16位量化","13061128",0);

char   style2[4];

while(mmioSeek(file1,i++,SEEK_SET)&&i<500)

{

mmioRead(file1,style2,4);

if(style2[0]=='d'&&style2[1]=='a'&&style2[2]=='t'&&style2[3]=='a')

{

//        MessageBox(hwnd,"data","13061128",0);

break;

}

}

mmioSeek(file1,i+3,SEEK_SET);

mmioRead(file1,(char*)&size,4);

//        if(size%560256==0)

//           MessageBox(hwnd,"qwwqeweq","46ty",0);

/

i=i+7;

numbit=(wBitsPerSample/8);//一个样本的字节数；

num=size/numbit;//样本数

//        if(560256==num)

//            MessageBox(hwnd,"qwwqeweq","46ty",0);

pData=(BYTE*)new   char[size];//

mmioSeek(file1,i,SEEK_SET);//对文件重新定位；

mmioRead(file1,(char*)pData,size);//

ReleaseDC (hwnd, hdc) ;

return 0 ;

case   WM_SIZE:

cxClient = LOWORD (lParam) ;

cyClient = HIWORD (lParam) ;

return 0 ;

case   WM_PAINT:

hdc = BeginPaint (hwnd, &ps) ;

if(Channels==1)

{

if(wBitsPerSample==8)

{

for(int k=0;k

{

for(int j=0;j

{

SetPixel(hdc,j-k,(WORD)*(pData+j),0) ;

}

PatBlt(hdc,0,0,50000,50000,WHITENESS);

}

MessageBox(hwnd,"播放完毕","13061128",0);

}

if(wBitsPerSample==16)

{

for(int k=0;k

{

for(int j=0;j

{

SetPixel(hdc,j-k,(WORD)*(pData+j*2),0) ;

}

PatBlt(hdc,0,0,50000,50000,WHITENESS);

}

MessageBox(hwnd,"播放完毕","13061128",0);

}

}

else if(Channels==2)

{

if(wBitsPerSample==8)

{

for(int k=0;k

{

for(int j=0;j

{

SetPixel(hdc,j-k,(WORD)*(pData+j*2),0) ;

}

for(j=0;j

{

SetPixel(hdc,j-k,(WORD)*(pData+1+j*2)+100,0) ;

}

PatBlt(hdc,0,0,50000,50000,WHITENESS);

}

MessageBox(hwnd,"播放完毕","13061128",0);

}

if(wBitsPerSample==16)

{

for(int k=0;k

{

for(int j=0;j

{

WORD w;

memcpy(&w,pData+j*4,2);

//    SetPixel(hdc,j-k,w%1000-400,0) ;

SetPixel(hdc,j-k,w/50+100,0) ;

}

for(j=0;j

{

WORD w;

memcpy(&w,pData+2+j*4,2);

//    SetPixel(hdc,j-k,w%1000-200,0) ;

SetPixel(hdc,j-k,w/50+350,0) ;

}

PatBlt(hdc,0,0,50000,50000,WHITENESS);

}

MessageBox(hwnd,"播放完毕","13061128",0);

}

}

return 0 ;

case   WM_DESTROY:

PostQuitMessage (0) ;

return 0 ;

}

return DefWindowProc (hwnd, message, wParam, lParam) ;

}

问题：编译时过不了啊。VC6.0编译器。

Linking...

wav.obj : error LNK2001: unresolved external symbol __imp__mmioRead@12

wav.obj : error LNK2001: unresolved external symbol __imp__mmioSeek@12

wav.obj : error LNK2001: unresolved external symbol __imp__mmioOpenA@12

LIBCD.lib(crt0.obj) : error LNK2001: unresolved external symbol _main

Debug/wav.exe : fatal error LNK1120: 4 unresolved externals

执行 link.exe 时出错.

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