[mfc] ip address control

[rahuljin]

hello, i want to set the value of the ip address control from a string, say ip[100] which is read from a text file. how this can be done ? the text file contains ip like --- 127.0.0.1 or 111.111.11.1

[Adam Roderick J]

ULONG ulP = inet_addr(szIPAddress );

[rahuljin]

i dont get, please explain. i am using this code but it makes the mfc application crash.

len = strlen(fff);

if(strlen(fff) > 0 && strcmp(fff, "\\n") != 0)
{
	while(fff\[i\] != '.')
	{
		c\[j\] = fff\[i\];
		j++;
		i++;
	}
	m1 = atoi(c);
	j = 0;
	i++;
	ZeroMemory(c, 3);

	while(fff\[i\] != '.')
	{
		c\[j\] = fff\[i\];
		j++;
		i++;
	}
	m2 = atoi(c);
	j = 0;
	i++;
	ZeroMemory(c, 3);

	while(fff\[i\] != '.')
	{
		c\[j\] = fff\[i\];
		j++;
		i++;
	}
	m3 = atoi(c);
	j = 0;
	i++;
	ZeroMemory(c, 3);

	while(len > i)
	{
		c\[j\] = fff\[i\];
		j++;
		i++;
	}
	m4 = atoi(c);
	j = 0;
	i++;
	ZeroMemory(c, 3);
	ipAdd.SetAddress(m1, m2, m3, m4);
}

[Maximilien]

I assume you are talking about CIPAddressCtrl. The method CIPAddressCtrl::SetAddress take 4 BYTE parameters (see : doc on MSDN[^]) So, you will need to extract each "part" from the string and convert each substring to a BYTE. (manually or int_addr[^])

This signature was proudly tested on animals.

[bolivar123]

You may be over complicating the conversion of the 4 number parts of the IP address. Try this instead:

int m1,m2,m3,m4;

sscanf(fff,"%d.%d.%d.%d",&m1,&m2,&m3,&m4);

ipAdd.SetAddress(m1,m2,m3,m4);

Of course, you'll need to validate the IP address is in the proper format.

[rahuljin]

this method shows wrong ip in the ip address control.

[bolivar123]

The variable fff must be a string only containing a valid IP address. try this:

LPSTR lpIPAddress = _T("127.0.0.1");
int m1, m2, m3, m4;
sscanf(lpIPAddress,"%d.%d.%d.%d",&m1,&m2,&m3,&m4);
ipAdd.SetAddress(m1,m2,m3,m4);

//You should now see 127.0.0.1 in the IPAddress control

Make sure you're passing in just the IP address in the sscanf function.

[rahuljin]

it is working now. since i am using

fileh.ReadString((LPTSTR)fff , 100);

therefore i have to use the following code for the correct result ---

swscanf((LPCTSTR)fff,_T("%d.%d.%d.%d"),&m1,&m2,&m3,&m4);

thanks for the help.

[bolivar123]

You're welcome! Glad you got it working. :-D