I'm using C# to build an add-in for PowerPoint 2007. When I select a shape in the presentation, a contextual tab "Drawing Tools" which contains the tab "Format" appears.
1. Without any external libraries, is it possible to add my own custom contextual tab that would appear next to "Drawing Tools"? If not, are there any workarounds that would make the tab appear only when a shape is selected e.g. having a custom tab appear next to "Format" under "Drawing Tools"?
2. If 1. is not possible, are there any external libraries that would help me achieve this effect? Which freeware library would you recommend? Which commercial library would you recommend?
Thanks.