VC 注册表读写

BYTE          Vals[256];HKEY          hKEY;//打开注册表，判断注册表项是否存在if(RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T("SOFTWARE\\WeldTech\\AirCondition\\"), 0, KEY_READ|KEY_WRITE, &hKEY) != ERROR_SUCCESS){                   //不存在，创建注册表项 if(::RegCreateKey(HKEY_LOCAL_MACHINE, _T("SOFTWARE\\WeldTech\\AirCondition\\"), &hKEY) != ERROR_SUCCESS) {    }}   ::RegSetValueEx( hKEY, _T("SavePath"), 0, REG_SZ, (LPBYTE)(LPCTSTR)g_saveDataPath, 256 );     //s设置注册表的键和值，相当于创建了键::RegCloseKey(hKEY);//查询注册表CString     g_saveDataPath ;BYTE         Vals[256];HKEY         hKEY;DWORD    type_1 = REG_SZ;DWORD   cbData_1 = 256;if(RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T("SOFTWARE\\WeldTech\\AirCondition\\"), 0, KEY_READ|KEY_WRITE, &hKEY) == ERROR_SUCCESS){  if(::RegQueryValueEx(hKEY, _T("SavePath"), NULL,&type_1,(BYTE*)Vals, &cbData_1)==ERROR_SUCCESS) {  CString strRead;  strRead.Format(_T("%s"), Vals);  strRead.Trim();  g_saveDataPath = strRead; }}::RegCloseKey(hKEY);