I work in a school and we want to be able to deter pupils from doing non-work related internet stuff during their lessons. For this purpose, I'm creating a Java applet that will take a single screenshot from a random computer in a room every few seconds and display it. The idea being that the teacher will run the applet on a PC possibly connected to a projector. This way the kids know that a screen grab of their desktop could appear at any time, and (in theory) do their work.
I'm only using single frame screengrabs, because I don't want to impact on the performance of the PCs. I've now got the applet working perfectly for computers with the origional WinVNC server installed, but this server is very CPU hungry, and the PC freezes for a second when the screenshot is taken. I switched the servers to UltraVnc, because it is much less CPU hungry, but now the screenshots come out black. It works fine with any of the other viewers but not my applet. Does anyone know of any differences in the protocol between WinVNC and UltraVNC that might be causing this? Matt _______________________________________________ VNC-List mailing list [EMAIL PROTECTED] To remove yourself from the list visit: http://www.realvnc.com/mailman/listinfo/vnc-list
