Using SwAddin to Create a SolidWorks Add-In
You can create a SolidWorks add-in using the ISwAddin
object instead of using a SolidWorks
When you use the ISwAddin object to create a SolidWorks add-in, the
add-in must include some specific functionality and code. It is also important
to understand what the SolidWorks software does for the add-in. Click
a link to read that section.
What does the add-in have to do?
The add-in DLL must be created as a COM Server and it must:
Implement a co-creatable object that supports
Call regsvr32 during installation. Register the
add-in CLSID in HKEY_LOCAL_MACHINE\SOFTWARE\SolidWorks\AddIns and set
the following registry keys:
Default to 1 or 0, where 1 enables the add-in in the add-in
manager so that it loads when the user starts the SolidWorks software.
Description to a text description of the add-in that is displayed
in the add-in manager.
Title to a text title of the description that is displayed in
the add-in manager.
Define event handlers as needed.
In its implementation of ISwAddin::ConnectToSW,
the add-in can:
and pass the instance handle of the add-in and the object that supports
the callback methods. The SolidWorks software holds onto this object and
and pass the callback method associated with the menu item.
and pass the callback method associated with the toolbar button.
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What does the SolidWorks software do?
When the end-user starts the SolidWorks software, it:
Checks the registry for add-ins.
Creates an object associated with the CLSID of
Performs a QueryInterface on the add-in looking
for the SwAddin object.
and passes a pointer to the SolidWorks session and the add-in ID.
When the user closes the SolidWorks software or disables an add-in in
the add-in Manager, the SolidWorks software:
providing the add-in an opportunity for cleanup.
Destroys the object it created with the add-in
If the end-user disables an add-in in the add-in manager, the SolidWorks
software does not reload the next time the SolidWorks software starts.
If the end-user closes the SolidWorks software with an add-in enabled,
the SolidWorks software reloads the add-in the next time it starts.
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To learn more about add-ins and their menu items and toolbars: