Windows VNC – Serve Specific Display Only

multiple-monitorsvncvncserverwindows

I'm doing this nice little project which will please a bunch of iPod/iPhone users, but one of my last steps requires me to serve up a specific display on my computer, how do I specify which display to use?

I found this quote from a mailing list regarding UltraVNC but I see no option or entry in their server dialogs to enter it…

Barry,

VNC Server supports remoting of individual monitors' contents via the
command-line/registry option DisplayDevice, which should be set to something
like:

\.\DISPLAY0 for the primary display
\.\DISPLAY1 for the second display

And so on.

Regards,

Wez @ RealVNC Ltd.

Any ideas? I'd preferably like to avoid using the VNC servers 'area' function.

Best Answer

The RealVNC 4.1 documentation describes how to use this option. I haven't seen a specific commandline option to activate it, but you can also add it to the registry.

DisplayDevice=<display>

The display device to remote, or empty to remote all displays. The format of display is \\.\<device>. For example, \\.\display1.

You need to set or create the DisplayDevice key in one of the following places, depending on how you're running the server:

  • If running RealVNC server as a service, set/create the key under

    HKEY_LOCAL_MACHINE\Software\RealVNC\WinVNC4

  • If running RealVNC server in user-mode, set/create the key under

    HKEY_CURRENT_USER\Software\RealVNC\WinVNC4

I found some indication that this option might be specified on the commandline like this (no guarantees; I can't test this for you):

Winvnc4 -displaydevice=\\.\display1 -portnumber=5900
Winvnc4 -displaydevice=\\.\display2 -portnumber=5901
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