GUI forwarding without desktop installed Post: 302917338

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Top Forums UNIX for Dummies Questions & Answers GUI forwarding without desktop installed Post 302917338 by bakunin on Tuesday 16th of September 2014 07:22:50 AM

09-16-2014

Registered User

Quote:

Originally Posted by tofa83

If I've not installed the desktop part, can I still ssh to the box and forward GUI applications with Xming when needed to a windows box?

I do not know Xming, but i suppose it is some sort of X-Server software, like the well-known Opentext Exceed (formerly known as Hummingbird Exceed). In this case: yes, you can.

X-Windows is a client-/server-system, where you have locally an "X-server" running, which manages your graphical display. Think of it like a driver for your graphic card along with a - networked - function library so clients can make use of its services. This part is installed locally, at your client (yes, the "server" running on the "client" can be a bit confusing, but with the explanation above it should make perfect sense).

A "X-client" is a software which makes use of these functions a X-server offers. Examples of a X-client would be "xterm" or "Firefox". These X-clients will run on any networked host (your client as well as any server) and will connect (via the "X-protocol", a specialized network protocol) to your local X-server to display (in a window) their frontend on your display. They do so by using the services your X-server offers.

Which X-server an X-client uses is determined by the environment variable "DISPLAY", which should point to a display managed by a X-server. Notice, that X-servers have a sort-of authentication, managed by the "xauth" and the "xhost"-utilities. For a quick test you can use xhost + to allow all hosts to use the X-server. Once you found the setup to be working fine-tune this to allow only the hosts you want.

Quote:

Originally Posted by blackrageous

You will still need to install X

No, in fact you do not. You just have to install the X-clients.

I hope this helps.

bakunin

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LEARN ABOUT OSX

desktop_color_depth

desktop_color_depth(3alleg4)					  Allegro manual				      desktop_color_depth(3alleg4)

NAME

       desktop_color_depth - Finds out the desktop color depth. Allegro game programming library.

SYNOPSIS

       #include <allegro.h>

       int desktop_color_depth();

DESCRIPTION

       Finds  out  the	currently  selected desktop color depth. You can use this information to make your program use the same color depth as the
       desktop, which will likely make it run faster because the graphic driver won't be doing unnecessary color conversions behind your back.

       Under some OSes, switching to a full screen graphics mode may automatically change the desktop color depth. You have,  therefore,  to  call
       this function before setting any graphics mode in order to retrieve the real desktop color depth. Example:

	  allegro_init();
	  ...
	  if ((depth = desktop_color_depth()) != 0) {
	     set_color_depth(depth);
	  }

RETURN VALUE

       Returns the color depth or zero on platforms where this information is not available or does not apply.

SEE ALSO

       get_desktop_resolution(3alleg4), set_color_depth(3alleg4), set_gfx_mode(3alleg4)

Allegro 							   version 4.4.2				      desktop_color_depth(3alleg4)

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