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Microsoft Office Excel 2003 Programming Inside Out

                             automatically appear as you type your code. Syntax checking and type checking is also per-
                             formed as you code, so you are less likely to get errors when the code executes than with
                             late binding.
                             You must use the CreateObject or the GetObject function to create an object variable reference
                             to the target application when using late binding. You can use the same functions when early
                             binding, but it’s more efficient to use the New keyword. However, if you want to test for an open
                             instance of another application at run time, GetObject can be used with early binding as well.

                             The techniques presented in this chapter allow you to create powerful programs that tap into
                             the unique abilities of different products. The user remains in a familiar environment such as
                             Excel, while the code ranges across any product that has a type library and exposes its objects
                             to VBA.












             Chapter 21





































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             Part 6:  Excel and the Outside World: Collaborating Made Easy
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