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Chapter 21: Creating Excel Add-Ins
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4. In the Comments field, enter a description.
This information appears at the bottom of the Add-Ins dialog box when
the add-in is selected. For this example, enter Changes the case of text in
selected cells. Access this utility by using the right-click shortcut menu.
Protecting the VBA code
If you want to add a password to prevent others from viewing the VBA code,
follow these steps:
1. Activate the VBE and select the change case.xlsm workbook in the
Project window.
2. Choose Tools➪VBAProject Properties and click the Protection tab on
the dialog box that appears.
3. Select the Lock Project for Viewing check box and enter a password
(twice).
4. Click OK.
5. Save the workbook by choosing File➪Save from the VBE’s menu or by
going back to the Excel window and choosing File➪Save.
Creating the add-in
At this point, you’ve tested the change case.xlsm file, and it’s working correctly.
The next step is to create the add-in:
1. If needed, reactivate Excel.
2. Activate the change case.xlsm workbook and choose File➪Save As.
Excel displays its Save As dialog box.
3. In the Save as Type drop-down menu, select Add-In (*.xlam).
4. Specify the location and click Save.
A new add-in file (with an XLAM extension) is created, and the original XLSM
version remains open.
Opening the add-in
To avoid confusion, close the XLSM workbook before opening the add-in that
you created from that workbook.