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);