How to view VNCviewer screen in foreground during execution.

The SikuliX VNC feature does not allow to work like a VNCViewer.

The respective class is VNCScreen according to the docs:
http://sikulix-2014.readthedocs.io/en/latest/screen.html#connecting-to-a-vnc-server-vncscreen

A VNCScreen has the same features as class Screen/Region, but only against a remote screen using a VNC session.

Thanks for your reply. What is the purpose of VncViewer.Showscreen() in sikulix?. to show the currenn vncscreen in foreground mode?

Not sure, what you are talking about:
VncViewer.Showscreen()

I cannot find this "feature" in the current SikuliX (> 1.1.1)

I am using Sikuli 1.1.1 version java.

I am using the below mentioned code. PFB for your reference
VNCScreen vnc= VNCScreen.start("**.**.**.**",5900,"*****",5000,5000);
vnc.showScreen();

i want to view my vnc screen during execution?..do this code works.

--- vnc.showScreen();
Such a feature has never been in the SikuliX classes and is not in the current version (which is the same since 1.1.1 based on TigerVNC)

--- i want to view my vnc screen during execution?
as mentioned: not a SikuliX feature (... and will never be)

You might run a normal VNC-viewer or an RDP-client and run SikuliX scripts against the VNC/RDP window.

So open a desktop via VNCViewer class will only run in background mode rite?.

--- So open a desktop via VNCViewer class will only run in background mode rite?.
I am not sure, what you are talking about.
VNCViewer is nothing related to SikuliX.

See your other recent questions.