Library tutorials & articles
API Programming Series #1
- Foreword
- So what's API
- Where does the API reside?
- How can we access API functions from VB?
- Why use the API when I can achieve most of the thi
- What are the cons?
- Conclusion
How can we access API functions from VB?
Since these functions are encapsulated within external DLLs they are not available
in VB by default. Before invoking (i.e. using) them, we must declare them. Usually
this is done in the General | Declarations part of the module in which they
are to be used.
One important thing should be remembered while declaring API functions within
a form module. VB does not allow public Declare statements within form modules.
So the Declare statements should be explicitly specified as Private since all
object module members are considered Public by default. But this makes them
invisible outside the module in which they are defined. So the functions should
be declared in every module that needs to use them.
Declaring them in a separate .BAS module where they can be declared as Public
and are therefore accessible to all the modules eliminates this duplication.
This also permits easier maintenance.
Note: We will see how to declare and use API functions in the
second article of this series.
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Hey
just wondering if anyone has an advice for a problem tha i'm trying to solve:
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This thread is for discussions of API Programming Series #1.