VC获取windows 安装内存(RAM)
//起因：在某些机器上无法使用GlobalMemoryStatusEx和GlobalMemoryStatus获取到正确的总内存大小//可使用GetPhysicallyInstalledSystemMemory获取到。//该函数只支持windows vista/7/8/server 2008/ server 2012std::string s;s.resize(64);ULONGLONG *ptr_mem = new ULONGLONG;if (GetPhysicallyInstalledSystemMemory(ptr_mem)) {sprintf_s(&s[0], s.length(), "TotalMem : %d", *ptr_mem / 1024L);}if (nullptr != ptr_mem) { delete ptr_mem; ptr_mem = nullptr;}?