How to get mac address of pc via c++ function?

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C++

void GetMACaddress(void)
{
  unsigned char MACData[6];

  UUID uuid;
  UuidCreateSequential( &uuid );    // Ask OS to create UUID

  for (int i=2; i<8; i++)  // Bytes 2 through 7 inclusive 
                           // are MAC address
    MACData[i - 2] = uuid.Data4[i];

  CString s3=MACData;
.................
}

When i use the above code I have the following Error
How to resolve this?

Error 35 error LNK2019: unresolved external symbol __imp__UuidCreateSequential@4 referenced in function "public: static void __cdecl CDemoDlg::GetMACaddress(void)" (?GetMACaddress@CDemoDlg@@SAXXZ) DemoDlg.obj MIDIDevDemo v2

Error 36 fatal error LNK1120: 1 unresolved externals d:\chaitra\Basic version\MIDI 22-3-2012 pro updating\Debug\MIDIDevDemo v2.exe MIDIDevDemo v2

[updated]
After solving The error In above code I have MACData which is showing value 0X0012aab8 but my mac(physical address is 6 2digit numbers separated with"-" and different from the value shown(without quotes).

Can I accept that as my mac Id or what should be changed to correct to get as 6 2digit numbers separated with"-" which is actual mac address.

What should be my code to get actual mac address or physical address?

Posted 21-Mar-12 18:20pm

chaiein

Updated 21-Mar-12 19:26pm

v3

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barneyman 22-Mar-12 0:46am

I'd be more inclined to use GetAdaptersInfo than rely on an undocumented nuance of UUID creation ...

2 solutions

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Resmi Anna · Accepted Answer · 2012-03-21T18:26:00

Solution 1

you have to add the input lib Rpcrt4.lib via project setting and the header Rpc.h to your project

please check this link Getting the Physical (MAC) address of a Network Interface Card and finding out if it is the primary adapter on a multi-homed system[^]

Posted 21-Mar-12 18:26pm

Resmi Anna

Updated 21-Mar-12 19:36pm

v2

Comments

chaiein 22-Mar-12 1:14am

Thank you :) It helped to remove the Error:)

chaiein 22-Mar-12 1:24am

Please check my updated question

Resmi Anna 22-Mar-12 1:37am

please check the updated answer. This may be helpful I hope

chaiein 22-Mar-12 1:47am

Thank you Resmi Anna:)

chaiein · Accepted Answer · 2012-03-21T19:49:00

Solution 2

To The above code I added

C++

char mac_address[18];
sprintf(mac_address,"%02X:%02X:%02X:%02X:%02X:%02X",uuid.Data4[2],uuid.Data4[3],uuid.Data4[4],uuid.Data4[5],uuid.Data4[6],uuid.Data4[7]);

can replace : with -
This gives the exact mac address of 6 2digits

Posted 21-Mar-12 19:49pm

chaiein

v2