With BaseExtensions, we are able to call built in Mso functions using VSTO.
When calling Mso functions, we must use the name of the Mso command for either Word, PowerPoint, or Excel. These can be found in the different programs:
In the different tabs, it is possible to see the many features. When pointing at a feature, the name of the Mso will appear. Here is an example:
Define name of Mso command for Word
Define name of Mso command for PowerPoint
Define name of Mso command for Excel
With the example above, the command for PowerPoint would look like this:
<Cmd case="BaseExtensions:execute-mso" PowerPoint="PictureFillCrop"/>