Do you mean an XL4 macro function? If so, this info from the XLM help file may
be useful. It doesn't mention anything about hidden sheets, one way or the
other. You'll have to try it.

GET.WORKBOOK
Macro Sheets Only

Returns information about a workbook.

Syntax

GET.WORKBOOK(type_num, name_text)

Type_num is a number that specifies what type of workbook information you
want.

Type_num Returns
1 The names of all sheets in the workbook, as a horizontal array of text
values. Names are returned as [book]sheet.
2 This will always return the #N/A error value.
3 The names of the currently selected sheets in the workbook, as a horizontal
array of text values.
4 The number of sheets in the workbook.
5 TRUE if the workbook has a routing slip; otherwise, FALSE.
6 The names of all of the workbook routing recipients who have not received
the workbook, as a horizontal array of text values.
7 The subject line for the current routing slip, as text.
8 The message text for the routing slip, as text.
9 If the workbook is to be routed to recipients one after another, returns 1.
If it is to be routed all at once, returns 2.
10 TRUE, if the Return When Done check box in the Routing Slip dialog box is
selected; otherwise, FALSE.
11 TRUE, if the current recipient has already forwarded the current workbook;
otherwise, FALSE.
12 TRUE, if the Track Status checkbox in the Routing Slip dialog box is
selected; otherwise, FALSE.
13 Status of the workbook routing slip:
0 = Unrouted

1 = Routing in progress, or the workbook has been routed to a user

2 = Routing is finished

14 TRUE, if the workbook structure is protected; otherwise, FALSE.
15 TRUE, if the workbook windows are protected; otherwise, FALSE.
16 Name of the workbook as text. The workbook name does not include the drive,
directory or folder, or window number.
17 TRUE if the workbook is read only; otherwise, FALSE. This is the equivalent
of GET.DOCUMENT(34).
18 TRUE if sheet is write-reserved; otherwise, FALSE. This is the equivalent
of GET.DOCUMENT(35).
19 Name of the user with current write permission for the workbook. This is
the equivalent of GET.DOCUMENT(36).
20 Number corresponding to the file type of the document as displayed in the
Save As dialog box. This is the equivalent of GET.DOCUMENT(37).
21 TRUE if the Always Create Backup check box is selected in the Save Options
dialog box; otherwise, FALSE. This is the equivalent of GET.DOCUMENT(40).
22 TRUE if the Save External Link Values check box is selected in the
Calculation tab of the Options dialog box. This is the equivalent of
GET.DOCUMENT(43).
23 TRUE if the workbook has a PowerTalk mailer; otherwise, FALSE. Returns #N/A
if no OCE mailer is installed.
24 TRUE if changes have been made to the workbook since the last time it was
saved; FALSE if book is unchanged (or when closed, will not prompt to be
saved).
25 The recipients on the To line of a PowerTalk mailer, as a horizontal array
of text.
26 The recipients on the Cc line of a PowerTalk mailer, as a horizontal array
of text.
27 The recipients on the Bcc line of a PowerTalk mailer, as a horizontal array
of text.
28 The subject of the PowerTalk mailer, as text.
29 The enclosures of the PowerTalk mailer, as a horizontal array of text.
30 TRUE, if the PowerTalk mailer has been received from another user (as
opposed to just being added but not sent). FALSE, if the mailer has not been
received from another user.
31 The date and time the PowerTalk mailer was sent, as a serial number.
Returns the #N/A error value if the mailer has not yet been sent.
32 The sender name of the PowerTalk mailer, as text. Returns the #N/A error
value if the mailer has not yet been sent.
33 The title of the workbook as displayed on the Summary tab of the Properties
dialog box, as text.
34 The subject of the workbook as displayed on the Summary tab of the
Properties dialog box, as text.
35 The author of the workbook as displayed on the Summary tab of the
Properties dialog box, as text.
36 The keywords for the workbook as displayed on the Summary tab of the
Properties dialog box, as text.
37 The comments for the workbook as displayed on the Summary tab of the
Properties dialog box, as text.
38 The name of the active sheet.


Name_text is the name of an open workbook. If name_text is omitted, it is
assumed to be the active workbook.

Example

The following macro formula returns the name of the active sheet in the
workbook named SALES.XLS:

GET.WORKBOOK(38, "SALES.XLS")
Related Functions

GET.DOCUMENT Returns information about a workbook

WORKBOOK.SELECT Selects the specified documents in a workbook


On Thu, 17 Mar 2005 11:32:43 -0500, Jim Gordon MVP
wrote:

Hi Ian,

This question is not Mac specific, so I'm cross posting to the
excel.programming newsgroup to see whether anyone there has the answer.

-Jim