Awesome

transparent-canvas

This is a Delphi VCL / Windows project for drawing semi-transparent alphablended graphics. It provides a class similar to TCanvas.

Project home page: http://parnassus.co/open-source/ttransparentcanvas/

Note: this project used to be hosted on Google Code (code.google.com/p/transparent-canvas) and was moved on 2015-03-12.