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This walkthrough explains how to use an ActiveX Control in
your own project. Before you begin you need to have the ActiveX Control you intend to use registered on your computer. For
this walkthrough I will be using the Mp3P control (mp3p.ocx).
Step 1 - Add ActiveX Control
Within your project there should be a way to insert an ActiveX Control. In Visual Studio C++ I do this by right-clicking
on my program dialog and selecting "Insert ActiveX Control."
This will display a dialog for you to select from all of
the registered controls on your computer. After selecting
the "Mp3P Control" it is added to my project and
looks like a little white box.
Step 2 - Add Member Variable
Now that the control has been added to your project, you
can add a member variable to represent the control. I did
this by right-clicking the control and selecting "Add
Variable" (this may be different for you). The variable
is an ocx control type variable.
Once the variable has been added, you can use it to invoke
methods or access properties of the control. For example,
my variable is called "m_mp3control". To call the
"Play" method of the Mp3P control within my program,
I add the line
m_mp3control.Play();
Step 3 - Add Event Handler
In addition to accessing methods and properties, you can
handle events that are fired by a control. Adding an event
handler should be similar to adding a variable. I did this
by right-clicking the control and selecting "Add Event
Handler. This popped up a window that allowed me to pick from
the list of events for this control.
After the event handler has been added, you should have a
method in which you can add code for whenever this event is
fired by the control.
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