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I think this is about creating an Excel XLL: "The primary reason for writing Microsoft Excel XLLs and using the C API is to create high-performance worksheet fu
by virgulino 6y ago
I think this is about creating an Excel XLL: "The primary reason for writing Microsoft Excel XLLs and using the C API is to create high-performance worksheet functions.[0]" If I'm not mistaken, this API predates COM Automation and COM add-ins.
[0] https://docs.microsoft.com/en-us/office/client-developer/excel/developing-excel-xlls https://docs.microsoft.com/en-us/office/client-developer/exc...
- drbw 6y agoYeah, it's practically archaeology now! It is very fast for doing some things, though. If anyone's interested in it from a Dot Net perspective, ExcelDNA [0] was excellent when I used it a few years ago. [0] https://excel-dna.net/ https://excel-dna.net/