EasyManua.ls Logo

Teklynx Discover ActiveX - Page 20

Teklynx Discover ActiveX
165 pages
Print Icon
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Loading...
Chapter 1 -- 12
Programmer’s Guide
S A WithEvents variable cannot be a generic object variable.
Thatis,youcannotdeclareitAsObject-youmustspecify
the class name when you declare the variable.
S You cannot declare a WithEvents variable As New. The
event source object must be explicitly created and assigned
to the WithEvents variable.
S You cannot declare WithEvents variables in a standard mod-
ule. You can declare them only in class modules, form mod-
ules, a nd other mod ule s that define classes.
S You cannot create arrays of WithEvents variables.
"
""
" Writing code to handle an event
As soon as you declare a variable WithEvents,thevariable
name appears in the left-hand drop down of the module’s code
window. When you select MyDoc,theDocument class events
will appear in the right-hand drop down, as shown in Figure 2
below:
Figure 2 An event associated with a WithEvents variable
Selecting an event will display the corresponding event
procedure, with the prefix MyDoc_. All the e vent procedures
associated with a WithEvents variable will have the variable
name as a prefix.

Table of Contents