What does this code do?

[SuperSonic]

Hello people,
I'm looking through a program for school, and I found this code inside it:

#import "C:\Program Files\Common Files\System\ado\msado15.dll" \
rename("EOF", "EndOfFile")

ADODB::_ConnectionPtr DBConnect = NULL;
ADODB::_RecordsetPtr Rec = NULL;

HRESULT hr;

Can anyone explain what all this does? I know that the #import statement will load a dll file, but I don't know what that dll does. I also know that DBConnect and Rec look like they're pointers, but again, what do they do? Also, what is a HRESULT object used for? If you need me to provide more code from this program, I'd be glad to do so.

[Computergeek01]

Here are the functions included in that DLL:

RNIGetCompatibleVersion
DllUnregisterServer
DllRegisterServer
DllGetClassObject
DllCanUnloadNow
com_ms_wfc_data_Field_setDataDate
com_ms_wfc_data_Field_loadMsjava
com_ms_wfc_data_Field_isNull
com_ms_wfc_data_Field_getString
com_ms_wfc_data_Field_getShort
com_ms_wfc_data_Field_getLong
com_ms_wfc_data_Field_getInt
com_ms_wfc_data_Field_getFloat
com_ms_wfc_data_Field_getDouble
com_ms_wfc_data_Field_getDataTimestamp
com_ms_wfc_data_Field_getBytes
com_ms_wfc_data_Field_getByte
com_ms_wfc_data_Field_getBoolean

Courtesy of Nirsoft's DLL Export Viewer.

'_ConnectionPtr' and '_RecordsetPtr' are data types from the ADODB namespace that are being initialized to NULL. What they do is pretty evident given their name.

[SuperSonic]

What they do is pretty evident given their name.

Not to me. I've never messed with this kind of stuff. I know that _ConnectionPtr is obviously supposed to connect to something, but to what? And how does it do that?

*edit* When I say, "To what?" I mean, is it a database? Is it a website? You know what I mean?

[Computergeek01]

ADO = ActiveX Data Object, so yeah I assume it's a connection to a database. As for "how it does that", I'm not a .Net programmer so I've had no reason to take this particular library apart.

[SuperSonic]

Ok, thanks for the info. This helped a bit :)