Greets... you can use mouse events from TForm or if you put TVScreen, you can trap mouse events with more info. As always, you draw things on the screen using RenderEffect method, as shown in examples. PowerDraw.dll is needed for pixel format conversion routines, compression and encryption. In other words, PowerDraw.dll is almost a heart of PowerDraw library; it has to be included with the program's EXE but it's not that big 149 Kb and 74Kb compressed with ZIP....