Form Controls – Adding Interactivity to Your Worksheets

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Form Controls

What Are Form Controls?

Form Controls are objects which you can place onto an Excel Worksheet which give you the functionality to interact with your models data.

You can use these controls on worksheets to help select data. For example, drop-down boxes, list boxes, spinners, and scroll bars are useful for selecting items from a list. Option Buttons and Check Boxes allow selection of various options. Buttons allow execution of VBA code.

By adding a control to a worksheet and linking it to a cell, you can return a numeric value for the current position of the control. You can use that numeric value in conjunction with the Offset, Index or other worksheet functions to return values from lists.

Use below links to quickly learn about Form Controls:

Where Are Form Controls?

Form Controls are located on the Developer Tab under Insert Form Control.

PS: If you do not have developer tab, learn how to enable it.

You will notice 2 types of Form Controls, being Form Controls and Active X controls.

This post will only be dealing with Form Controls. The Active X controls, similarities and differences will be discussed towards the end of the post.

How Do I Insert a Form Control

To Insert a Form Control goto the Form Control Menu and click on the Form Control you want to insert.

Now click on the worksheet in the location you want your form control.

Don’t worry about the location or size you can change those later.

 

What Are The Different Form Controls?

There are several types of Form Controls offering a range of interactivity from a simple display through to interactive controls which allow multiple selection or interactive selection of values.

Control Name Description Function
Button Push Button Executes a macro
Check Box Allow selection of non-exclusive options Multiple On/Off options
Combo Box Drop Down selection Box Select items from a Drop down list
Group Box Layout element which groups common elements Nil
Label A Text label Can be static or linked to a cell
List Box Fixed selection box Select items from a list
Option Button Allow selection of exclusive options Exclusive Single On/Off option
Scroll bar Allow Horizontal or Vertical scrolling Increases or decreases a cells value by a fixed amount
Spin Button Increment/decrement a value by a fixed amount Increases or decreases a cells in steps by a fixed amount

These are discussed individually below

Form Control Types

 

Button (Form Control)

 

The Button Form Control is as its name suggests simply a Button.

Pressing the Button allows execution of a macro.

The Button has no other controls.

Button Text

You can right click on the button and change the buttons Text (Edit Text) and enter the text you want displayed on the button.

The Button’s text can be linked to a cell, select the Button, In the formula Bar enter a link to a cell. eg: =$C$3 and accept. The Button’s text will now change as the contents of the cell C3 change.

You can change the Text Style including Font, Color and Text Direction using the Format Control  (Ctrl 1) option.

Assign Macro

Right click on the Button and select Assign Macro

The Assign Macro dialog will pop up.

Select the macro you want to assign to the button.

Label (Form Control)

The Label Form Control is also as its name suggests simply a Label.

The Label will display text either fixed or from a linked cell

You can right click on the button and change the buttons text (Edit Text).

The Button’s text can be linked to a cell, select the Button, In the formula Bar enter a link to a cell

eg: =$C$3 and accept. The Button’s text will now change as the contents of the cell C3 change.

Unlike the Button you cannot change the Text Style, Font, Color or Text Direction.

Typically a label is put in front of another Control to explain or add a title to the control.

Labels would rarely be used on a Worksheet as a label as they have limited text format properties.

Users would be better served using either cell text or a Text Box where full text formatting is allowed.

Labels come into use when setting up custom Dialog Forms which are used by VBA applications for custom data entry or other uses.

 

Check Box (Form Control)

The Check Box form Control allows selection of a number of non-exclusive options.

That is any number of Check Box controls may be implemented and they independently be on or off and have no relationship to each other.

The Check Box Form Control returns the value indicating its status, either True (selected) or False (not selected),  to a linked cell.

To link a Format Control to a cell, Right Click the Format Control and select Format Control…

Option Button (Form Control)

The Option Button form Control allows the selection of an exclusive option from a number of alternatives.

That is only one Option Button Form Control may be selected at a time, the remainder are automatically turned off.

The Option Button Form Control returns the value of the Option Button indicating its status to a linked cell.

In the Example above the Option Buttons are linked to cell E2.

You only need link one Option Button to cell E2, Excel automatically links the remaining option buttons to teh same cell.

Selecting a Different Option Button automatically deselelects the other Option Buttons and changes the linked cells value

List Box (Form Control)

The List box allows the selection of one or more items from a list.

The list is sourced from a Range of cells in the above case it was F2:F17.

The List Form Control returns an Index Number or position of the selected item to the Cell Link, 5 in the example above.

The Input Range and Cell Link are setup by Right Clicking the control and select Format Control…

The Number of items visible in the list box is determined by the size of the list box

If there are more items than will fit in the list box then a scroll bar is automatically added to the list box to enable there selection.

Combo Box (Form Control)

The Combo Box allows the selection of one or more items from a drop down list.

The Combo Box use is similar to the list box except that it has a drop down selection list instead of a fixed length selection list.


The list is sourced from a Range of cells in the example below it was F2:F17.

The List Form Control returns an Index Number or position of the selected item to the Cell Link B10, 9 in the example below.

The Input Range, Cell Link and size of the Drtop Down Box are setup by Right Clicking the control and select Format Control…


Spin Button (Form Control)

The Spin Button is a simple toggle button that allows the increase or decrease of a linked cells value by a certain pre-defined amount.

The Cell Link and Lower, Upper Limits and Step Size parameters are setup by Right Clicking the control and select Format Control…

The Lower, Upper Limits and Step Size must be Integers. If you want to increase a cell by fractional amounts you will need to for example set the range from 0 to 1000 in steps of 1 and then devide the linked cell by 10 which will give a Range of 0 to 100 in steps of 0.1

Scroll Bar (Form Control)

The Scroll Bar Form Control often referred to as a Slider is a simple linear slider that allows the increase or decrease of a linked cells value by sliding a bar either left/right or up/down.

Scroll Bars can be placed either Horizontally or Vertically by dragging the corner.

Scroll bars are incremented by the Step Size by clicking the ends of the bars or dragging the slider or by a Page Jump Size by using Page up[/down or clicking either side of the slider bar.

The Cell Link, Lower, Upper Limits, Incremental Change and Page Change parameters are setup by Right Clicking the control and select Format Control…

The Lower, Upper Limits, Incremental Change and Page Change must be Integers. If you want to increase a cell by fractional amounts you will need to for example set the range from 0 to 1000 in steps of 1 and then devide the linked cell by 10 which will give a Range of 0 to 100 in steps of 0.1

Group Box (Form Control)

The Group Box Form Control isn’t really a Form Control at all, as it allows no interactivity.

What it is used for is grouping similar controls so that functional groups of controls can be maintained and the users flow is directed around a form.

Using the Form Controls

General Use

The use of the information from a form control is limited by your imagination.

Typical uses are

  • Selecting items for a chart
  • Selecting data sets
  • Moving data sets
  • Adjusting values in a model

As described in each of the above Form Controls is that the Form Controls do not return a value directly from a list, they all return either a number or an index number relative to the position of the item in a list.

Examples of all the Form Controls and examples of their use can be found in the attached file:

Excel 2003 Examples or Excel 2007+ Examples

or

Have a browse through the dashboards presented during Dashboard Week

or

For some Extreme Examples of Spreadsheet Interactivity using Form Controls and a little bit of VBA code:

ExcelHero.com

Running Macros

Apart from the Button Form Control whose only purpose is to Run Macro’s, all Form Controls can be linked to a Macro.

This is done by Right Clicking on the Form Control and selecting Assign Macro.

It is worth noting that the macro is only executed after the control is released.

EG: If you have a macro linked to a Spin Button, If the Spin Button is held down and hence repeatedly increments its value, the macro will only be executed after the control is released.

 

Moving and Resizing Form Controls

You can move and resize form controls as with all other worksheet Objects.

Select the form control by right clicking on it

Use the handles to resize or drag the edges to move the controls

Hint: You can use Alt while dragging or resizing to snap the control to cell boundaries.

3D, Printing & Locking Form Controls

You can lock Form Controls as well as enable them to be printed or not

Right Clicking the control and select Format Control…

Use the Size, Protection and Properties Tabs as required.

The 3D option enables a 3D version of the Control instead of a flat control, which can add a bit of sparkle in some instances.

Limitations of Form Controls

Form controls offer a limited set of functions but do those functions very well.

Limitations are Form Controls:

  • Form Controls can only increase or decrease by integer numbers
  • Form Controls only return the index of an item in a list
  • Form Controls have limited format properties (Font, Color etc)

What are the Active X Controls

Active X controls are like Form Controls on Steroids in that they have a much wider range of properties than Form Controls.

They also have much better ties to VBA in terms of programmability and have a number of events that can be accessed programmatically.

The main limitation of Active X controls are that they use a Microsft Active X component. This means that if you are sharing your workbook with an Apple Mac user using Excel for Mac  these functions wont be available as Active X isn’t avilable on that Platform.

Workbooks with Form Controls will happily work on a an Apple Mac.

Other Controls Available in Excel

A number of other Excel objects can be used to add interactivity to your worksheets.

Shapes

These include:

  • Shapes
  • Charts
  • Text Boxes
  • Word Art

All these can have macro’s linked to them which effectively act the same as a Button Form Control without the moving button effect.

A stunning example of using Text Boxes was recently posted at: The Grammy Bump Chart

Where the Artists Stats Box (Top Left of Chart) is using several Text Boxes linked to cells to show the Selected Artsists Statistics.

HyperLinks

Inserting Hyperlinks at stratgic locations throughout worksheets provides a great way to simplify navigation around pages and between pages

Other Links

http://office.microsoft.com/en-us/excel-help/overview-of-forms-form-controls-and-activex-controls-on-a-worksheet-HA010237663.aspx

Where have you used Form Controls ?

Where have you used Form Controls?

Let us know in the comments below:

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20 Responses to “Simulating Dice throws – the correct way to do it in excel”

  1. alpha bravo says:

    You have an interesting point, but the bell curve theory is nonsense. Certainly it is not what you would want, even if it were true.

  2. Karl says:

    Alpha Bravo - Although not a distribution curve in the strict sense, is does reflect the actual results of throwing two physical dice.

    And reflects the following . .
    There is 1 way of throwing a total of 2
    There are 2 ways of throwing a total of 3
    There are 3 ways of throwing a total of 4
    There are 4 ways of throwing a total of 5
    There are 5 ways of throwing a total of 6
    There are 6 ways of throwing a total of 7
    There are 5 ways of throwing a total of 8
    There are 4 ways of throwing a total of 9
    There are 3 ways of throwing a total of 10
    There are 2 ways of throwing a total of 11
    There is 1 way of throwing a total of 12

  3. Chandoo says:

    @alpha bravo ... welcome... 🙂

    either your comment or your dice is loaded 😉

    I am afraid the distribution shown in the right graph is what you get when you throw a pair of dice in real world. As Karl already explained, it is not random behavior you see when you try to combine 2 random events (individual dice throws), but more of order due to how things work.

    @Karl, thanks 🙂

  4. Jon Peltier says:

    When simulating a coin toss, the ROUND function you used is appropriate. However, your die simulation formula should use INT instead of ROUND:

    =INT(RAND()*6)+1

    Otherwise, the rounding causes half of each number's predictions to be applied to the next higher number. Also, you'd get a count for 7, which isn't possible in a die.

    To illustrate, I set up 1200 trials of each formula in a worksheet and counted the results. The image here shows the table and a histogram of results:

    http://peltiertech.com/WordPress/wp-content/img200808/RandonDieTrials.png

  5. Chandoo says:

    @Jon: thanks for pointing this out. You are absolutely right. INT() is what I should I have used instead of ROUND() as it reduces the possibility of having either 1 or 6 by almost half that of having other numbers.

    this is such a good thing to learn, helps me a lot in my future simulations.

    Btw, the actual graphs I have shown were plotted based on randbetween() and not from rand()*6, so they still hold good.

    Updating the post to include your comments as it helps everyone to know this.

  6. Jon Peltier says:

    By the way, the distribution is not a Gaussian distribution, as Karl points out. However, when you add the simulations of many dice together (i.e., ten throws), the overall results will approximate a Gaussian distribution. If my feeble memory serves me, this is the Central Limit Theorem.

  7. Chandoo says:

    @Jon, that is right, you have to nearly throw infinite number of dice and add their face counts to get a perfect bell curve or Gaussian distribution, but as the central limit theorem suggests, our curve should roughly look like a bell curve... 🙂

  8. [...] posts on games & excel that you may enjoy: Simulating Dice throws in Excel Generate and Print Bingo / Housie tickets using this excel Understanding Monopoly Board [...]

  9. YourFifthGradeMathsTeacher says:

    I'm afraid to say that this is a badly stated and ambiguous post, which is likely to cause errors and misunderstanding.
    Aside from the initial use of round() instead of int(),.. (you've since corrected), you made several crucial mistakes by not accurately and unambiguously stating the details.

    Firstly, you said:
    "this little function generates a random fraction between 0 and 1"
    Correctly stated this should be:
    "this little function generates a random fraction F where 0 <= F < 1".

    Secondly, I guess because you were a little fuzzy about the exact range of values returned by rand(), you have then been just as ambiguous in stating:
    "I usually write int(rand()*12)+1 if I need a random number between 0 to 12".
    (that implies 13 integers, not 12)

    Your formula, does not return 13 integers between 0 to 12.
    It returns 12 integers between 1 and 12 (inclusive).
    -- As rand() returns a random fraction F where 0 <= F < 1, you can obviously can only get integers between 1 and 12 (inclusive) from your formula as stated above, but clearly not zero.

    If you had said either:
    "I usually write int(rand()*12) if I need a random number between 0 to 11 (inclusive)",
    or:
    "I usually write int(rand()*12)+1 if I need a random number between 1 to 12 (inclusive)"
    then you would have been correct.

    Unfortunately, you FAIL! -- repeat 5th grade please!

    Your Fifth Grade Maths Teacher

  10. Justin says:

    Idk if I'm on the right forum for this or how soon one can reply, but I'm working on a test using Excel and I have a table set up to get all my answers from BUT I need to generate 10,000 answers from this one table. Every time, I try to do this I get 10,000 duplicate answers. I know there has to be some simple command I have left out or not used at all, any help would be extremely helpful! (And I already have the dice figured out lol)

    Roll 4Dice with 20Sides (4D20) if the total < 20 add the sum of a rerolled 2D20. What is the average total over 10,000 turns? (Short and sweet)

    Like I said when I try to simulate 10,000turns I just get "67" 10,000times -_- help please! 😀

  11. Hui... says:

    @Justin

    This is a good example to use for basic simulation

    have a look at the file I have posted at:
    https://rapidshare.com/files/1257689536/4_Dice.xlsx

    It uses a variable size dice which you set
    Has 4 Dice
    Throws them 10,000 times
    If Total per roll < 20 uses the sum of 2 extra dice Adds up the scores Averages the results You can read more about how it was constructed by reading this post: http://chandoo.org/wp/2010/05/06/data-tables-monte-carlo-simulations-in-excel-a-comprehensive-guide/

  12. SpreadSheetNinja says:

    Oh derp, i fell for this trap too, thinking i was makeing a good dice roll simulation.. instead of just got an average of everything 😛

    Noteably This dice trow simulate page is kinda important, as most roleplay dice games were hard.. i mean, a crit failure or crit hit (rolling double 1's or double 6's) in a a game for example dungeons and dragons, if you dont do the roll each induvidual dice, then theres a higher chance of scoreing a crit hit or a crit failure on attacking..

  13. Freswinn says:

    I've been working on this for awhile. So here's a few issues I've come across and solved.

    #1. round() does work, but you add 0.5 as the constant, not 1.

    trunc() and int() give you the same distributions as round() when you use the constant 1, so among the three functions they are all equally fair as long as you remember what you're doing when you use one rather than the other. I've proven it with a rough mathematical proof -- I say rough only because I'm not a proper mathematician.

    In short, depending on the function (s is the number of sides, and R stands in for RAND() ):

    round(f), where f = sR + 0.5
    trunc(f), where f = sR + 1
    int(f), where f = sR + 1

    will all give you the same distribution, meaning that between the three functions they are fair and none favors something more than the others. However...

    #2. None of the above gets you around the uneven distribution of possible outcomes of primes not found in the factorization of the base being used (base-10, since we're using decimal; and the prime factorization of 10 is 2 and 5).

    With a 10-sided die, where your equation would be
    =ROUND(6*RAND()+0.5)
    Your distribution of possible values is even across all ten possibilities.
    However, if you use the most basic die, a 6-sided die, the distributions favor some rolls over others. Let's assume your random number can only generate down to the thousandths (0.000 ? R ? 0.999). The distribution of possible outcomes of your function are:
    1: 167
    2: 167
    3: 166
    4: 167
    5: 167
    6: 166

    So 4 and 6 are always under-represented in the distribution by 1 less than their compatriots. This is true no matter how many decimals you allow, though the distribution gets closer and closer to equal the further towards infinite decimal places you go.
    This carries over to all die whose numbers of sides do not factor down to a prime factorization of some exponential values of 2 and 5.

    So, then, how can we fix this one, tiny issue in a practical manner that doesn't make our heads hurt or put unnecessary strain on the computer?

  14. Freswinn says:

    Real quick addendum to the above:
    Obviously when I put the equation after the example of the 10-sided die, I meant to put a 10*RAND() instead of a 6*RAND(). Oops!

    Also, where I have 0.000 ? R ? 0.999, the ?'s are supposed to be less-than-or-equal-to signs but the comments didn't like that. Oh well.

  15. Andrew says:

    How do you keep adding up the total? I would like to have a cell which keeps adding up the total sum of the two dices, even after a new number is generated in the cells when you refresh or generate new numbers.

  16. kk says:

    So, how do you simulate rolling 12 dice? Do you write int(rand()*6) 12 times?

    Is there a simpler way of simulating n dice in Excel?

  17. Mohammed Ali says:

    I've run this code in VBA

    Sub generate()
    Application.ScreenUpdating = False
    Application.Calculation = False
    Dim app, i As Long
    Set app = Application.WorksheetFunction

    For i = 3 To 10002
    Cells(i, 3).Value = i - 2
    Cells(i, 4).Value = app.RandBetween(2, 12)
    Cells(i, 5).Value = app.RandBetween(1, 6) + app.RandBetween(1, 6)
    Next
    Application.ScreenUpdating = True
    Application.Calculation = True
    End Sub

    But I get the same distribution for both columns 4 and 5
    Why ?

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