WinCE设置点击屏幕声音

//点击屏幕声 0:无声 1:柔和 65538:洪亮
 HKEY RegKey;
 DWORD voluem=0;
 if(RegOpenKeyEx(HKEY_CURRENT_USER,TEXT("ControlPanel\\Volume\\"),0,0,&RegKey)==ERROR_SUCCESS)
 {
  RegSetValueEx(RegKey,TEXT("Screen"),0,REG_DWORD,(LPBYTE)&voluem,sizeof(DWORD));
 }
 RegCloseKey(RegKey);

 //调用API函数AudioUpdateFromRegistry，通知系统已对注册表做修改。
 typedef void (WINAPI *DLL_AUDIOUPDATEFROMREGISTRY)();
 DLL_AUDIOUPDATEFROMREGISTRY Dll_AudioUpdateFromRegistry = NULL;
 HINSTANCE hCoreDll = LoadLibrary(TEXT("coredll.dll"));
 if (hCoreDll)
 {
  Dll_AudioUpdateFromRegistry = (DLL_AUDIOUPDATEFROMREGISTRY)GetProcAddress(hCoreDll, _T("AudioUpdateFromRegistry"));
  if (Dll_AudioUpdateFromRegistry)
  {
   (Dll_AudioUpdateFromRegistry)();
  }
  FreeLibrary(hCoreDll);
 }