This project gets you up and running with the xll library for creating high performance Excel add-ins written in C++, or C, or any language that can be called from C.
Use this template and open in Visual Studio 2019.
Double click xll_template.sln.
Press F5 to build the add-in and start Excel with it loaded in the debugger.
To build for 32-bit Excel set Platform to Win32 in the Configuration Manager.
The solution and project are named xll_template. You may want to rename these,
and xll_template.h, xll_template.cpp while you're at it'.
The project creates a submodule for the xll library. To update to the latest xll version
start a command prompt using Tools\Command Line\Developer Command Prompt then
>cd xll
>git pull origin master