问题
I'm coding a Ribbon COM-add-in in C# and try to create a gallery of avaiable template files on a new tab.
Is it possible to set the gallery to open like the Style Selector gallery on the home tab in word ie. showing all the filenames in the gallery?
回答1:
MS does not allow others to use an In-Ribbon Gallery in Outlook 2007->2013. Maybe we will see it in Outlook 2015/2016.
Take a look at the MSDN Code Samples to see what Ribbon XML controls are available. The closest you can come is using the Gallery control which displays a customizable dropdown grid - not an in-ribbon gallery.
来源：https://stackoverflow.com/questions/12385104/vsto-ribbon-gallery-that-looks-like-the-style-selector-in-word-2010