Microsoft Office

Part VI
Programming Excel with VBA
If you click the OK button, notice that it doesn’t close the UserForm as you may expect. This button needs
to have an event-handler procedure in order for it to do anything when it’s clicked. To dismiss the
UserForm, click the close button in its title box.
CROSS-REF
You may prefer to display the UserForm by clicking a CommandButton on your worksheet. See
Chapter 42 for details on attaching a macro to a Worksheet CommandButton.
Creating an event-handler procedure
An event-handler procedure is executed when an event occurs. In this case, you need a procedure to handle
the Click event that’s generated when the user clicks the OK button.
1. Activate the VB Editor. (Pressing Alt+F11 is the fastest way.)
2. Activate the AboutBox UserForm by double-clicking its name in the Project window.
3. Double-click the CommandButton control. The VB Editor activates the code module for the
UserForm and inserts some boilerplate code, as shown in Figure 41.9.
4. Insert the following statement before the End Sub statement:
Unload AboutBox
FIGURE 41.9
The code module for the UserForm.
This statement simply dismisses the UserForm. The complete event-handler procedure is
Private Sub OKButton_Click()
Unload AboutBox
End Sub
Another UserForm Example
The example in this section is an enhanced version of the ChangeCase procedure presented at the beginning
of the chapter. Recall that the original version of this macro changes the text in the selected cells to
uppercase characters. This modified version asks the user what type of case change to make: uppercase,
lowercase, or proper case (initial capitals).
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