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Beckhoff-USA-Community / SPT-Libraries

MIT License
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Cannot cast from/to PackML interfaces #18

Closed calumsinclair closed 1 year ago

calumsinclair commented 1 year ago

Can you extend the existing packML interfaces so that we can run time cast them?

Use case example: We want to implement I_SomeRandomComponent. We tend to inject our I_SomeRandomComponent into the consuming class (a SubModule). We would like to cast the I_SomeRandomComponent to a I_Componentbase so that we can add it to the array.

At the moment we pass our FB_SomeRandomComponent into our FB_Init twice, against different interfaces. One is of type I_SomeRandomComponent, the other against I_Componentbase it gets from the from the inherited FB_Componentbase.

MarkLewis-Beckhoff commented 1 year ago

we have added the extends __SYSTEM.IQueryInterface to the I_BaseFB which all FB interfaces extend from you should be able to use the operator __QUERYINTERFACE at will. This should resolve the stated issue. Please confirm and I will close the issue.

calumsinclair commented 1 year ago

Can confirm this is now added in, thanks.