C/C++録音と再生を実現

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

static BYTE*    file = (BYTE*)malloc(sizeof(BYTE) * 512);
static DWORD    hasRecorded = 0;
static BOOL     recurr = TRUE;
class USER
{
public:
	int a = 0;
	char b = 'a';
};

void CALLBACK callback(HWAVEIN   hwi,          //     
	UINT      uMsg,							   //   
	DWORD_PTR dwInstance,					   //   
	DWORD_PTR dwParam1,						   //   1
	DWORD_PTR dwParam2);					   //   2

int main()
{
	HWAVEIN         hWaveIn;		        //    
	HWAVEOUT        hWaveOut;		        //    
	WAVEFORMATEX    waveform;	            //       
	BYTE* pBuffer1, * pBuffer2;				//       （    ）
	WAVEHDR         whdr_i1, whdr_i2;       //     
	WAVEHDR         whdr_o;                //     
	USER*			user = new USER();		//    
	
	//     
	int count = waveInGetNumDevs();
	printf("
      ：%d
", count);

	//     
	WAVEINCAPS waveIncaps;
	MMRESULT mmResult = waveInGetDevCaps(0, &waveIncaps, sizeof(WAVEINCAPS));//2
	std::cout <a,user2->b);
		//      
		DWORD buflen = pwhdr->dwBufferLength;
		DWORD bytrecd = pwhdr->dwBytesRecorded;
		hasRecorded += bytrecd;

		//     
		file = (BYTE*)realloc(file, hasRecorded * sizeof(BYTE));
		//      
		if (file)
		{
			memcpy(&file[hasRecorded-bytrecd], pwhdr->lpData, bytrecd);
			printf("   :%d byte
",hasRecorded);
		}
		//    	
		if (recurr)
		{
			//     
			waveInAddBuffer(hwi, pwhdr, sizeof(WAVEHDR));
		}
	}
	break;

	case WIM_CLOSE:                               //       
	{
		printf("    ..
");
		
	}
	break;

	default:
		break;
	}
}