After reviewing the MSDN documentation for the Windows Ribbon Framework I’ve discovered there is only one subject I haven't covered in my ribbon posts. This post comes to rectify this issue. This post is about how to define custom size definitions for ribbon group elements. The post is entirely about ribbon markup, so no changes to the Windows Ribbon for WinForms library. Nevertheless, I’ve uploaded a new sample “18-SizeDefinition” to the project site. In this sample I create the paragraph group...