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Olaf Bönning
- PowerBuilder
- Monday, 27 March 2023 08:04 PM UTC
...without using the Microsoft Interop Forms Toolkit.
What we do until now: We use the .NET Framework 4.8.1 to write class libraries in C# and expose them to COM using the Interop Forms Toolkit. We call the COM-Server from PowerBuilder 2021. This works fine for invisible classes as well for visible user controls.
What we don't like: The Microsoft Interop Forms Toolkit is super old, and not supported any more.
What we want: Get rid of the toolkit. We want to use the latest .NET Framework (4.8.1) or .NET 8+ with build-in assemblies.
The try: This works super-easy with invisible COM-Servers (see attachment CCWNonVisible.zip).
We wrote an interface, a class which implements the interface. We build the project for x86, set the registration for Interop and use strong names.
But how can i expose a System.Windows.Forms.UserControl to PowerBuilder (see attachment CCWActiveX.zip)? The toolkit adds a manifest. Is this the missing part?
Many thanks for your ideas!
Btw. i read all the articles i could found for COM Callable Wrappers on the Microsoft sites and all the Bruce Armstrong articles in this Community. Still no idea.
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