Microsoft Office

Creating UserForms 41
FIGURE 41.7
The Properties window for a CommandButton control.
When you set properties by using the Property window, you’re setting properties at design time. You can
also use VBA to change the properties of controls while the UserForm is displayed (that is, at run time).
A complete discussion of all the properties is well beyond the scope of this book — and it would indeed be
very dull reading. To find out about a particular property, select it in the Property window and press F1.
The Help for UserForm controls is extremely thorough.
Handling events
When you insert a UserForm, that form can also hold VBA Sub procedures to handle the events that are
generated by the UserForm. An event is something that occurs when the user manipulates a control. For
example, clicking a button causes an event. Selecting an item in a list box control also triggers an event. To
make a UserForm useful, you must write VBA code to do something when an event occurs.
Event-handler procedures have names that combine the control with the event. The general form is the control’s
name, followed by an underscore, and then the event name. For example, the procedure that is executed
when the user clicks a button named MyButton is MyButton_Click.
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