I'm trying to access a network drive (\servername or \ipadress). The idea is that the drive is accessed only through the application and the login on the network drive is supposed to be used only by the application. So far i have found only the WNetUseConnection Function (http://msdn.microsoft.com/en-us/library/aa385482%28VS.85%29.aspx) which looks like something i want. Unfortuanatly i can't get it working. The code looks like:
NETRESOURCE nr;;
nr.dwType = RESOURCETYPE_DISK;
wchar_t remoteName[] = L"\\\\myremotenetworkdrive";
nr.lpRemoteName = remoteName;
wchar_t pswd[] = L"mypswd";
wchar_t usrnm[] = L"usrname";
int ret = WNetUseConnection(NULL, &nr, pswd, usrnm, 0, NULL, NULL, NULL);
std::cerr << "return code: " << ret << std::endl;
The return code is at first 1200 (ERROR_BAD_DEVICE) and after another function call changes to 487 (ERROR_INVALID_ADDRESS). The address (if iam right to put 4 backslashes there, but also tried it with two or without any at all) username and pswd are correct.
So basicly my question is: How do i get the obove code working? Considering my task ist this the right approach (if not how would you do that)?
I believe that you need to clear the NETRESOURCE structure (or directly initialize all members). A memset prior to setting the other values may help:
memset( &nr, 0, sizeof( nr ));
In addition, you need to specify the share name as pointed out in the comments:
wchar_t remoteName[] = L"\\\\server\\share";
Also, if you want to associate it with a specific drive letter, you can set this member:
nr.lpLocalName = L"z:";
Without clearing the structure or initializing it somehow, elements such as that lpLocalName would have "random" stack data in it and result in undefined behavior.