Password Form With CapsLock Warning and Show Password

This post covers a password form I’ve developed developed and am adding to my database-connected utilities.

As I’ve mentioned, I use Excel mostly as a development environment for database queries. So, along with tools like SQL Developer and SQL Server Management Studio, I run and test a lot of my SQL right in Excel. This lets me use all of its filtering, pivoting and other data features to explore and validate query results. I recently even developed a data dictionary in Excel which queries database metadata for helpful information about the tables, fields, foreign keys, etc.

We adhere to an old-school coding style in my workplace. We don’t alias our tables with meaningless one-letter names and we type our SQL in ALL CAPS. I like this, but it means that I often typo case-sensitive passwords because CapsLock is on. So I’m updating my password entry to include a CapsLock check. And while I’m at it I’m adding a “show text” button. And, as often happens when I make something I like, I’m sharing my password form with you.

The Form

In the GIF below, CapsLock was on when the form was called. Once the user clicks in the password textbox the CapsLock warning is displayed. The CapsLock check is called from the textbox’s Enter and KeyUp events, in case it’s pressed while typing the password. The warning is turned off in the Exit event.

You can also see the Show Password feature in action. It’s just a toggle button that switches the textbox’s PasswordChar from “*” to “”.

password form in action

The code includes the GetKeyState API code I found on the web and modified. In the downloadable example below the password form is called from a main module and the username and password are passed back from the form, as in my flexible chooser form post.

Features I Didn’t Add

For a while I made it so that clicking the Show Textbox button put the focus back into the password textbox. This was cool, but harder to code with a predictable circular event between the textbox and the togglebutton. Also, it seemed like overkill for a password form that you won’t be spending much time with. The other thing I looked at was having the Show Textbox control engage only while it was pressed, which seems more secure from shoulder-hackers.

Do you have a password form or suggestions for this one?

Download

Here’s a sample workbook with the form.

Determining if a Pivot Field Has Visible Subtotals

In my last post I talked about identifying pivot table’s Values field, if it had one. That function plays a part in this post, which is shows two functions for determining if a pivot field has visible subtotals. As with the last post, I didn’t find much about this on the web. I even asked my first Excel question on Stack Overflow. After a bunch of experimentation I came up with a function that seems to always work. And then, whaddaya know I came up with a better one. I use the second function in my improved per-item conditional formatting utility, which I will post about soon.

What Do I Mean by “Visible Subtotals?”

In the picture below the pivot table is set to show subtotals for every field. However subtotals are actually visible only for the Region field. There’s none for the Items field, which makes sense since Items is the rightmost field, and its subtotals would just be a repeat of the individual item values:

All Subtotals at Bottom

The VBA Subtotals Property Does Half the Job

The first thing you might try in VBA is checking the pivot fields Subtotals property. However below you can see that it returns True for both fields. The issue is the same as above: Subtotals are turned on but they don’t show for the rightmost field:

Subtotals in Immediate Window

My First Attempt

So, I wrote some code that:
1. Checks if a field’s subtotals are turned on. If not, the function returns False.
2. Checks if any fields with the same orientation as the field we’re checking is a Values field
3. Tests if the field we’re checking is in the last position for its orientation (including the Values field). If not, then subtotals are on and the function returns True.

Function PivotFieldSubtotalsVisible_OLD(pvtFieldToCheck As Excel.PivotField) As Boolean
Dim i As Long
Dim SubtotalsOn As Boolean
Dim pvt As Excel.PivotTable
Dim ValueField As Excel.PivotField
Dim FieldPosition As Long

With pvtFieldToCheck
   'Only row and column fields can show subtotals,
   If Not (.Orientation <> xlColumnField Or .Orientation <> xlRowField) Then
      GoTo exit_point
   End If
   Set pvt = .Parent
   
   'Get the pivot tables ValuesField
   Set ValueField = GetValuesField(pvt)
   'The Value field is a column or row field,
   'but won't have subtotals
   If ValueField Is pvtFieldToCheck Then
      GoTo exit_point
   End If
   
   'There are 12 possible types of Subtotals (at least XL 2003 on)
   'If any of them are TRUE then Subtotals are on.
   For i = LBound(.Subtotals) To UBound(.Subtotals)
      If .Subtotals(i) = True Then
         SubtotalsOn = True
         Exit For
      End If
   Next i

   'No need to proceed if they aren't even on
   If Not SubtotalsOn Then
      GoTo exit_point
   End If
   
   FieldPosition = .Position
   'This is confusing, but
   'if the Values field's position is greater than the field-to-check's position
   'we want to ignore the Values field, as it won't affect the field-to_check's visibility
   If Not ValueField Is Nothing Then
      If ValueField.Orientation = .Orientation And ValueField.Position > FieldPosition Then
         FieldPosition = FieldPosition + 1
      End If
   End If
   'If the field-to-check isn't in the last position
   '(taking into account the Values field)
   'then it's Subtotals will be visible
   If (.Orientation = xlColumnField And pvt.ColumnFields.Count > FieldPosition) Or _
      (.Orientation = xlRowField And pvt.RowFields.Count > FieldPosition) Then
      PivotFieldSubtotalsVisible_OLD = True
   End If
End With

exit_point:
End Function

A Better Way – PivotCell to the Rescue

The above seems to work fine, but it’s got kind of a feel-your-way-in-the-dark aspect to it. I would much rather just have some code that examines the actual pivot table and figures out whether a given field is currently showing any subtotals. Happily, I have found a way to do this.

It’s based on the Range.PivotCell object and its PivofField and PivotCellType properties, all of which go back to Excel 2003, according to this MSDN page. They allow you to cycle through a pivot table’s cells checking for ones with a PivotCellType of xlPivotCellSubtotal (or xlPivotCellCustomSubtotal ) and, if so, checking what PivotField the subtotals belong to. I’ll discuss this some more after the VBA.

The Code

Function PivotFieldSubtotalsVisible(pvtFieldToCheck As Excel.PivotField) As Boolean
Dim pvt As Excel.PivotTable
Dim cell As Excel.Range

With pvtFieldToCheck
   'Only row and column fields can show subtotals,
   If Not (.Orientation = xlColumnField Or .Orientation = xlRowField) Then
      GoTo exit_point
   End If
   Set pvt = .Parent
   For Each cell In Union(pvt.ColumnRange, pvt.RowRange)
      If cell.PivotCell.PivotCellType = xlPivotCellSubtotal Or cell.PivotCell.PivotCellType = xlPivotCellCustomSubtotal Then
         If cell.PivotCell.PivotField.Name = .Name Then
            PivotFieldSubtotalsVisible = True
            GoTo exit_point
         End If
      End If
   Next cell
End With

exit_point:
End Function

How it Works

The code above actually only checks the pivot table’s ColumnRange and RowRange. These ranges are highligthed in the picture below. The code checks this area for cells with a PivotCellType of subtotal or custom subtotal. There are 10 PivotCellTypes, nine of which can be found in the ColumnRange or RowRange areas (the data area of the pivot table consists just of the xlPivotCellValue type.

ColumnRange and RowRange

The picture below highlights the cells with a PivotCellType of either xlPivotCellSubtotal or xlPivotCellCustomSubtotal. The custom subtotals are ones such as Min, Max and Average. These can be set in the field options menu. If the code finds a cell whose PivotCell.PivotCellType property is one of these two it then checks the cell’s PivotCell.PivotField object for a match with the field passed to the function.

PivotCell Subtotal types

I Like PivotCells

I’ve used the Range.PivotTable object quite a bit over the years. But it’s just recently that I’ve delved into the Range.PivotCell property. Hopefully I’ve given you some ideas for how you could use it to poke around in pivot tables.

Have you used the Range.PivotCell property? If so, leave a comment (I also love comments, especially the ones that add to my knowledge and don’t require me to do anything but say “thanks”).

Identify a Pivot Table’s Values Field

Over the next few posts I plan to delve into a couple of functions I’ve written to identify areas in a pivot table. I also want to do a quick post on a pivot quirk I noticed recently. I then plan to roll it up into a post on my new-and-improved per-pivot-item conditional formatting tool. It’s good to have plans, right? Anyways, let’s get started with a function to identify a pivot table’s Values field.

I deduced the following just by messing around – I couldn’t find anything on the web about identifying a Values field. If I got something wrong, or if you have a better way to do this, please leave a comment.

What is a Values Field?

The Values field is the one that appears when you have more than one data field. Its location in the Rows or Columns area of the pivot table dialogs controls the grouping of those data fields. In the following example, I’ve grouped the data area by data fields within years. In other words, the two summing data fields appear side-by-side for each year:

Values Field by years then values

In the next example I’ve dragged the Value field up and now the data area grouping is for years within data fields:

Values Field by values then years

Some pivot table layouts, such as the one below, don’t show the word “Values” anywhere in the pivot table, but it still shows in the pivot table dialog:

Values Field Column Labels

Like all pivot fields, the Values field can be renamed. Note that though I changed it to “Frodo” in the pivot table, it still says “Values” in the dialog:

Values Field by values called Frodo

Everything I’ve said about the Columns area of the pivot dialog applies to the Rows area. The Values field behaves the same way there.

Identifying the Values Field in VBA

EDIT:

In the comments below Petra identified a much faster way using PivotTable.DataPivotField. DataPivotField contains the Values field, whether or not it’s visible. So,

If DataPivotField.Orientation <> 0

tests whether the Values field is present.

So, anyways, I wanted a VBA function that returns a pivot table’s Values field if it has one. When figuring out how to do this I asked myself:

Is the Values field a PivotTable.DataField or a PivotTable.ColumnField/RowField?

The answer is both, kind of. So, for instance, in the examples pictured above typing the following into the immediate window returns “Values”:

? ActiveCell.PivotTable.ColumnFields("Values").Name

And so does this:

? ActiveCell.PivotTable.DataFields("Values").Name

So it looks like the Values field is both a data and column (or row) field. To further confirm this, note that this statement returns True:

? ActiveCell.PivotTable.DataFields("Values").Orientation = xlColumnField

So, even though it’s both a Data and Column (or Row) field it looks like it’s a bit more of a Column field (I’m going to stop saying “or Row” now). This is backed up by the fact that you can’t refer to it’s Data personality using an index. In other words, the following returns an error:

? ActiveCell.PivotTable.DataFields(3).Name

(1 and 2 return the two other data fields)

Furthermore, if you check the

DataFields.Count

for the example above the count is only two.

Cutting to the Chase

In addition to the above, I’ve got one more informational tidbit: if you change the name of the Values field to “Frodo,” both its Data and Column selves refer to themselves as “Frodo.” So even though, as we’ve seen above, the dialog box continues to use the word “Values” to refer to this field,

? ActiveCell.PivotTable.DataFields("Values").Name

gets you a runtime error 1004.

This means that you can’t just refer to the values field using “Values” in either its DataField or ColumnField version. If you do and a user changes its name you’re out of luck.

Fortunately, this has an upside, and it’s not just that I have something to blog about. It means that a Values field name is the only field name in the pivot table that can be repeated for a Data field and a Column field. Usually two fields can’t have the same name. For example, in the examples above if you try to rename “Year” or “Values” to “Sum of Unit Cost” you’ll get a “Field name already exists” error. But in the case of a Values field both its Data and Columm/Row references will be the same name.

This means you can identify a pivot table’s Value field by finding a row or column field that has the same name as a data field. Cool, eh?

The Function

Function GetValueField(pvt As Excel.PivotTable) As Excel.PivotField
Dim pvtField As Excel.PivotField
Dim TestField As Excel.PivotField
Dim ValueField As Excel.PivotField
 
'If there's only one data field then there won't be a Values field
If pvt.DataFields.Count = 1 Then
    GoTo exit_point
End If
 
For Each pvtField In pvt.PivotFields
    On Error Resume Next
    'test each non-data field for a data field with a matching name
    Set TestField = pvt.DataFields(pvtField.Name)
    On Error GoTo 0
    If Not TestField Is Nothing Then
        'if there's a match then you've got the Values field
         Set ValueField = pvtField
        Exit For
    End If
Next pvtField
Set GetValueField = ValueField
 
exit_point:
End Function

Boom! Let me know if you’ve got a better way, anything to add, etc. And, as always, thanks for dropping by.