I am working on a designer like adobe Photoshop written in c#. I have given a task to implement a new feature which is to draw select and apply different font styles to a substring or word within text input and draw that. just like in the below image MS word is doing.
is there any open source code or a module written in c# doing exact same work? I have done half of the task but there coming excessive bugs. my designer looks like.
is there any open source code available for help?