This add-in uses the CXlFuncs and CXlMacros classes to call Excel worksheet and macro functions from an add-in function.
If you are using MS Developer Studio 6, then you should open the project file CallExcel.dsp.
If you are using MS Visual Studio .NET 2002, then you should open the solution file CallExcel.sln or the project file CallExcel.vcproj.
If you are using MS Visual Studio .NET 2003, then you should open the solution file CallExcel71.sln or the project file CallExcel71.vcproj.
If you are using MS Visual Studio 2005, then you should open the solution file CallExcel8.sln or the project file CallExcel8.vcproj.