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Strange ADO behaviour

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This is my code:
#include <windows.h>

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

_ConnectionPtr myCon;
_RecordsetPtr recordset;

#define GetItemA()        (char*)(_bstr_t)recordset->GetCollect("DestCity")

char* GetItemB() { return (char*)(_bstr_t)recordset->GetCollect("DestCity"); }

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	HDC hdc;
	PAINTSTRUCT ps;
	long count;

	switch (message) 
	{
	case WM_PAINT:
		hdc = BeginPaint(hWnd, &ps);

		recordset->get_RecordCount(&count);
		recordset->AbsolutePosition = (PositionEnum)1;
		for(long y=30,i=0;i<count;y+=20,i++)
		{
			//Column one
			TextOut(hdc, 30,y,GetItemA(),6);

			//Column two
			TextOut(hdc,130,y,GetItemB(),6);
		}

		EndPaint(hWnd, &ps);
		return 0;
	case WM_DESTROY:	
		PostQuitMessage(0);
		return 0;
	default:
		return DefWindowProc(hWnd, message, wParam, lParam);
	}
}

int APIENTRY WinMain(HINSTANCE hInstance,HINSTANCE,LPTSTR lpCmdLine,int nCmdShow)
{
	WNDCLASSEX wcex = {sizeof(WNDCLASSEX),0,(WNDPROC)WndProc,0,0,hInstance,0,0,(HBRUSH)6,0,"communicator",0};
	RegisterClassEx(&wcex);
	HWND hWnd = CreateWindow("communicator","title",WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,0,CW_USEDEFAULT,0,0,0,hInstance,0);
	
	CoInitialize(0);
	myCon.CreateInstance(__uuidof(Connection));
	myCon->Open("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=Linkdata.mdb","","",adModeUnknown);
	recordset.CreateInstance(__uuidof(Recordset));
	recordset->CursorLocation = adUseClient;
	recordset->Open("SELECT DestCity FROM Leads",(IDispatch*)myCon,adOpenDynamic,adLockUnspecified,adCmdUnknown);

	ShowWindow(hWnd, nCmdShow);
	UpdateWindow(hWnd);

	MSG msg;
	while (GetMessage(&msg,0,0,0)) 
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}

	recordset->Close();
	myCon->Close();
	CoUninitialize();

	return (int) msg.wParam;
}

This is my output: strange output The bottom line is
(char*)(_bstr_t)recordset->GetCollect("DestCity")
doesn't seem to work unless it is used in the same function that called it and I would like to know why.

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