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[ Team LiB ] Understanding Outlook's VBA Programming
Chia sẻ: Tuan Bui Nghia
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[ Team LiB ] Understanding Outlook's VBA Programming and VBA scares a lot of people off. It's really not hard and many code samples are available on the Internet for you to use, so you don't even have to know how to program. But if you're unsure of whether you're ready for this, put it down, get yourself an introductory Visual Basic programming book, and come back to this hour when you feel you're ready. Typing code samples from books isn't a favorite hobby of mine, even for short code snippets. It's too easy to make a typing error and...
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Nội dung Text: [ Team LiB ] Understanding Outlook's VBA Programming
- [ Team LiB ]
Understanding Outlook's VBA
Programming and VBA scares a lot of people off. It's really not hard and many code
samples are available on the Internet for you to use, so you don't even have to know how
to program. But if you're unsure of whether you're ready for this, put it down, get yourself
an introductory Visual Basic programming book, and come back to this hour when you
feel you're ready.
Typing code samples from books isn't a favorite hobby of mine,
even for short code snippets. It's too easy to make a typing error and
hard to notice the mistake when the code errors, resulting in
frustration and a feeling that you can't do it.
For this reason, I have a text file with the code used in this book
available at www.poremsky.com/samples/ for you to download.
Copy and paste the code into the VB Editor as you read this hour and
you'll discover you can do it. You might even discover you like
doing it.
There are many differences between how you create macros in Outlook compared to
Word and Excel. First, you have to write the code yourself; you can't record it using a
Macro recorder. Secondly, Word and Excel enable you to create a lot of modules that you
can easily distribute to others. Outlook uses one module, C:\Documents and
Settings\username\Application Data\Microsoft\Outlook\VBAProject.OTM, which
contains all the macros the user created. All forms and modules are stored within this one
file. If you give this file to someone and he uses it to replace his copy, he loses all
previous macros he had.
Projects and Modules
All OutlookVBA code is contained in a single project, coincidently named
VBAProject.OTM. This project is associated with a Windows user account, so
all users of a computer have their own VBAProject. You can have just one
VBAProject and all code used with Outlook is contained in this file.
A project contains code modules and UserForm modules. Don't confuse
Outlook forms with UserForms. UserForms are used to create the dialog boxes
you respond to, not only in Outlook, but in all Windows programs.
Code modules contain your VBA code, which is also referred to as a routine,
- procedure, macro, function, or subroutine. To the untrained eye, these all mean
the same thing—a bunch of code "that's all Geek to me." Seasoned developers
use the terms to describe different types of code. In Outlook, the main code
module is called ThisOutlookSession.
For a list of Outlook programming resources and code samples, see
http://www.slipstick.com/dev/index.htm.
There's so much to learn about writing your own Outlook code that it's better suited for a
book specifically about Outlook programming. For that reason, I won't go over the object
model or programming in depth; rather, I'll begin with entering your first macro. If you
want to learn more, there are many resources and code samples available on the Internet.
Because Outlook can do so much with code, Microsoft added security features to the
object model to block unauthorized access to a number of Outlook features by other
programs and VBA. Outlook 2003 eliminates the security prompts in properly
constructed Outlook COM add-ins and published Outlook forms. Code in Outlook VBA
also does not trigger security prompts because it's implemented as a COM add-in.
However, using the code to access other COM add-ins or libraries will trigger the
security warning.
[ Team LiB ]
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