I know nothing about developing XLLs but I think there were changes in the
SDK for Excel 2007 due to the increase in rows to 1,048,576 and columns to
65,536.

You might install the SDK and see if it provides any clues:

http://www.microsoft.com/downloads/d...displaylang=en

--
Jim
"dmsc33" wrote in message
...
|I have a 10+ year old add-in (still using Excel4v) that is fairly
| complex.
| Everything seems to work fine in Excel2007 except for a piece of logic
| that
| asks for the last cell in a sheet -
|
| Excel4v(xlcSelectLastCell, &xRes, 0);
| Excel4v(xlFree, 0, 1, xRes);
| Excel4v(xlfActiveCell &xRes. 0);
| returned xRes is of type error where in previous versions of Excel it
| was a range
|
| note that the error is returned only when this logic is executing
| after
| using xlcSelect (anchor column) then xlcInsert to insert a new
| column. If I
| haven't inserted a new column then the xlfActiveCell in the logic
| above does
| give me a valid range.
|
| any ideas why my insert is messing with my last cell?
|
| Thanks!
|
| -- Danielle