On 31/10/2012 09:13, Michael Schnell wrote: > I understand that there are (at least) two ways to do the remote > display. > > A) Read the pixels from the graphics driver. This is what VNC does. > The problem here is, that you don't know when an update is necessary > (and thus you need to do polling) and that reading the pixels needs a > lot of performances (get a GDI-handle, read the complete screen > memory via the bus and then transfer only the pixels that have > changed).
Some /free software/ VNC implementations (e.g. UltraVNC) install their own display driver [under Windows] to exactly know /when/ update is needed and where. > -Michael > Lukasz -- _______________________________________________ Lazarus mailing list [email protected] http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
