custom-drawing
There are 3 repositories under custom-drawing topic.
tolunaykan/DrawingView-Library-Android
You can easily implement a drawing view to your application. The drawing view lets you draw anything to the canvas using a lot of tools.
kodekote/gtkregextester
a regex testing utility for GTK 3
DevExpress-Examples/winforms-grid-show-error-icons
Display error icons within grid cells based on a specific condition.