play_music

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

using namespace std;

DWORD WINAPI PlayMp3(LPVOID lpVoid)
{
 LPCRITICAL_SECTION lpCriticalSection = (LPCRITICAL_SECTION)lpVoid;
 EnterCriticalSection(lpCriticalSection);
 char   buf[128];
 //use   mciSendString()  
 //mciSendString("play   e:\\songs\\把根留住.mp3",buf,sizeof(buf),NULL);  
 //mciSendString("play   e:\\songs\\zhj.mp3",buf,sizeof(buf),NULL);  
 //char   str[128]   =   {0};  
 //int   i   =   0;  

 //use mciSendCommand  
 MCI_OPEN_PARMS   mciOpen;  
 MCIERROR   mciError;  
 //mciOpen.lpstrDeviceType = (LPCTSTR)MCI_ALL_DEVICE_ID;  
 //mciOpen.lpstrDeviceType = "waveaudio"; //只能播放.wav文件  
 //mciOpen.lpstrDeviceType = "avivideo"; //*.avi  
 mciOpen.lpstrDeviceType = "mpegvideo";  
 //mciOpen.lpstrDeviceType = "sequencer";  
 mciOpen.lpstrElementName = "E:\\music\\新音乐\\梁静茹-我不快乐.wma";  
 //mciOpen.lpstrElementName = "e:\\movie\\first.avi";  
 //mciOpen.lpstrElementName = "c:\\winnt\\media\\Windows   登录音.wav";  
 mciError = mciSendCommand(0, MCI_OPEN,MCI_OPEN_TYPE | MCI_OPEN_ELEMENT, (DWORD)&mciOpen);  
 if(mciError)  
 {  
  mciGetErrorString(mciError,buf,128);  
  //MessageBox("send MCI_PLAY command failed", "ERROR");
  LeaveCriticalSection(lpCriticalSection);
  return 0;  
 }  
 UINT   DeviceID = mciOpen.wDeviceID   ;  
 MCI_PLAY_PARMS mciPlay;  

 //mciError   =   mciSendCommand(DeviceID,MCI_PLAY,0   ,(DWORD)&mciPlay); 
 //MCI_FROM | MCI_TO |
 mciError = mciSendCommand(DeviceID, MCI_PLAY, MCI_WAIT/* | MCI_DGV_PLAY_REPEAT*/,
  (DWORD) (LPMCI_PLAY_PARMS)&mciPlay);  //MCI_DGV_PLAY_REPEAT, 要 #include "Digitalv.h"
 if(mciError)
 {
  mciGetErrorString(mciError, buf, 128);
  //MessageBox("send MCI_PLAY command failed", "ERROR");
  LeaveCriticalSection(lpCriticalSection);
  return 0;
 }
 //  while(1)  
 //  {
 //   i++;
 //   Sleep(1000);
 //  }
 LeaveCriticalSection(lpCriticalSection);
 return 0;
}

DWORD WINAPI TestCriticalSection(LPVOID lpVoid)
{
 LPCRITICAL_SECTION lpCriticalSection = (LPCRITICAL_SECTION)lpVoid;

//  printf("sub must first Leave\n");
//  LeaveCriticalSection(lpCriticalSection);
 printf("subThread prepare enter\n");
 EnterCriticalSection(lpCriticalSection);
 printf("subThread already enter\n");

 printf("subThread prepare leave\n");
 LeaveCriticalSection(lpCriticalSection);
 printf("subThread already leave\n");
 return 0;
}

DWORD WINAPI EventFunc(LPVOID lpVoid)
{
 HANDLE  handleEvent = (HANDLE)lpVoid;
 Sleep(3000);
 printf("set the event");
 SetEvent(handleEvent);
 return 0;
}

int main(int argc, char *argv[])
{
 CRITICAL_SECTION criticalSection;
 InitializeCriticalSection(&criticalSection);
 printf("Main thread enter the first time\n");
 CreateThread(NULL, NULL, PlayMp3, &criticalSection, NULL, NULL);

 Sleep(200);
 EnterCriticalSection(&criticalSection);
 LeaveCriticalSection(&criticalSection);
 DeleteCriticalSection(&criticalSection);

 /************************************************************************/
 /* 测试事件Event                                                        */
 /************************************************************************/
//  HANDLE newHandle = CreateEvent(NULL, TRUE, TRUE,"newEvnet");
//  ResetEvent(newHandle);
//  CreateThread(NULL, NULL, EventFunc, newHandle, NULL, NULL);
//  WaitForSingleObject(newHandle, INFINITE);
//  ResetEvent(newHandle);

 /************************************************************************/
 /* 播放wav文件                                                          */
 /************************************************************************/
//  char wavFile[MAX_PATH] = "D:\\wav\\Windows XP 启动.wav";
//  sndPlaySound(wavFile, SND_SYNC);//函数在此阻塞 /* play synchronously (default) */
//  //sndPlaySound(wavFile, SND_ASYNC);//好像是使用线程,非阻塞 /* play asynchronously */
//  //Sleep(100000);

 

 return 0;
}

/************************************************************************/
/*关于CRITICAL_SECTION                                                  */
// /************************************************************************/
// 1.主线程可以连续两次(多次)进入临界区,此时临界区的LockCount的计数是2,
// 子线程就有时可以进入临界区,有时不可以进入临界区