C++/CLI How to Display Ram Info in GB

Question

private: System::Void button2_Click(System::Object^ sender, System::EventArgs^ e) {
ManagementObjectSearcher searcher("select * from Win32_Processor");
ManagementObjectSearcher searcher1("select * from Win32_VideoController");
ManagementObjectSearcher searcher2("select * from Win32_TotalVisibleMemory");
for each (ManagementObject ^ d in searcher.Get())
{
lb1->Text = d["Name"]->ToString();
break;
}
for each (ManagementObject ^ d in searcher1.Get())
{
lb2->Text = d["Name"]->ToString();
break;
}
for each (ManagementObject ^ d in searcher2.Get())
{
lb3->Text = d["Capacity"]->ToString();
break;
}
}

Hello...

This Code Show to me ram size in bytes but i need make it like "8 GB"

Answer 1

Answer Is It, Thanks ^_^

ManagementObjectSearcher searcher2("select * from Win32_OperatingSystem");

for each (ManagementObject ^ d in searcher2.Get())
{
unsigned long long size = System::Convert::ToUInt32(d["TotalVisibleMemorySize"]);

if (size >= 1'000'000)
{
lb3->Text = (size / 1'000'000) + " GB";
}
else
{
lb3->Text = size + " bytes";
}
}

Answer 2

Check if this works:

unsigned long long size = System::Convert::ToUInt64( d["Capacity"] );

if( size >= 1'000'000'000 )
{
   lb3->Text = ( size / 1'000'000'000 ) + " GB";
}
else
{
   lb3->Text = size + " bytes";
}

Answer 3

You can use StrFormatByteSize which rounds the bytes and formats the string
(#include <shlwapi.h>
(#pragma comment(lib, "Shlwapi") )

Test :

String^ sMemory = d["Capacity"]->ToString();  
marshal_context context;  
LPCTSTR pwsMemory = context.marshal_as<const TCHAR*>(sMemory);  
TCHAR wsMemory[32] = TEXT("");  
StrFormatByteSize(_wtof(pwsMemory), wsMemory, 32);  
String^ sMemoryNew = gcnew System::String(wsMemory);