Expression Blend comes with a bunch of editors for colors, gradients, collections, etc. Is it possible to extend expression blend to support a custom editor? For example, one might to have a custom editor for existing types such as TimeSpans or a completely new types.
I can't find anything on msdn but I can't find any discussion about it either - so I basically just want my expectation confirmed that this isn't supported.
I'm not sure if this is in line with your question directly but you can set value property editing in your behaviors etc. if that's what you're looking for.
http://msdn.microsoft.com/en-us/library/microsoft.windows.design.propertyediting%28VS.100%29.aspx
http://msdn.microsoft.com/en-us/library/bb514507%28VS.100%29.aspx