The demos do have this problem since I have not used seperate threads. When used under a seperate thread the jerk seldom appears.But to cure this bug iam rewriting the code using the CMemDC class.Soon there will be an Update.As far as using it in your application go ahead and use it in a seperate thread.I dont expect any problems. If u want a commercially viable example,go to my site,
http://members.xoom.com/EZSuite. I have got some freeware windows utilities there by the name EZShellPack. EZSendTo, one of the utilities has the 'SNAKE'. try selecting a large number of files and call EZSendTo, you will see the snake working without any problems.
Thanks for your interest,
This control looks great. I thought about dropping it into my application until I noticed that the control gets VERY jumpy when you move the mouse. I haven't looked at the code to see if there is a fix, but if you move the mouse around while the demo is going on, it jumps and gets very jerky.