Sub-windows created by an add-in

问题

I have seen several times that an add-in can create sub-windows in Excel. Here is an exemple:

Does anyone know which technique allows the add-in to create the sub-windows on the right hand side?

回答1:

This technique is CustomTaskPanes

来源：https://stackoverflow.com/questions/35188359/sub-windows-created-by-an-add-in