Communicating with the x-server

[Thomas Sondergaard]

Hi,

I need to implement an "Open URI" feature for a VNC x-server. The idea 
is that a Qt application running under the VNC x-server can communicate 
to the X-server the URI it wants to open, the X-server then needs to 
send the URI via the VNC (RFB) protocol and the VNC client can then open 
the URI (via ShellExecute on windows and e.g. xdg-open on Unix). I got 
all the parts working except the communication between the Qt 
application and the xvncserver.

What is the best way to do this?

My own thought was simply to have the x-server watch a property, say 
OPEN_URI, on the root window. Would that be the way to go? The 
realvnc-based code base I'm working with doesn't have any code that 
watches properties like this. Is there a way to snoop on PropertyNotify 
events?

Ideas and suggestions would be most welcome.

Thank you for your time.

Thomas