After hr = pConn.CreateInstance(__uuidof(Connection)); the value of hr is -2147221008. I can't seem to get anything more from the _com_error object that is thrown except that the errormessage says "Invalid Pointer". I wonder if there could be something wrong with my compile options? :confused:

Michael, I tried the casting and also added the adConnectUnspecified argument. My error occurs at runtime on the Open(...). Thanks, Glen

The catch block shouldn't be executing in the first place. For some reason my connection pointer isn't valid after hr = pConn.CreateInstance(__uuidof(Connection)); is executed. Any ideas what I'm missing? I think I'm missing a header file or something. It comiles just fine though....????

Hello, I am trying to establish a connection and I think I am missing something very basic. I get an "Invalid Pointer" error when the Open() is called. I am importing msado15.dll in StdAfx.h which is included in the file that contains the code below. My code: _ConnectionPtr pConn; HRESULT hr; try{ hr = pConn.CreateInstance(__uuidof(Connection)); _bstr_t bstrDSN = "DSN=test_db;UID=gstewart;PWD=gstewart"; pConn->Open(bstrDSN,"","", -1); } catch (_com_error e){ MessageBox(e.ErrorMessage()); }

Did you notice "Search" on the home page? :) You need to subclass the control and handle WM_DROPFILES. See http://www.codeproject.com/listctrl/filedroplistctrl.asp for how...