I need to develop a plugin for excel. It should behave similar to Plugins for Eclipse. It should be available as a context sensitive menu, should have access to spreadsheet contents currently opened, the chart content etc.
I saw the the following link for developing Add-ins for Excel: http://msdn.microsoft.com/en-us/library/office/aa730920(v=office.12).aspx#office2007excelXLL_DevelopingXLLs ( using C & C++ and XLL SDK).
Is this the only option to develop plugins for Excel?
What will your add-in do? It might be easiest to do it in Excel's built-in VBA.