http://www.stagexl.org/samples/
And you can look at some source code examples here:
https://github.com/bp74/StageXL_Samples
And StageXL also supports runtimes for Spine, Dragenbones, Flump, ...:
https://github.com/bp74/StageXL_Spine
https://github.com/bp74/StageXL_DragonBones
https://github.com/bp74/StageXL_Flump
https://github.com/bp74/StageXL_BitmapFont