xdpyinfo(1) [centos man page]

XDPYINFO(1)						      General Commands Manual						       XDPYINFO(1)

NAME

       xdpyinfo - display information utility for X

SYNOPSIS

       xdpyinfo [-display displayname] [-queryExtensions] [-ext extension-name] [-version]

DESCRIPTION

       Xdpyinfo  is  a	utility  for displaying information about an X server.	It is used to examine the capabilities of a server, the predefined
       values for various parameters used in communicating between clients and the server, and the different types of screens and visuals that are
       available.

       By  default,  numeric  information  (opcode,  base  event, base error) about protocol extensions is not displayed.  This information can be
       obtained with the -queryExtensions option.  Use of this option on servers that dynamically load extensions will likely cause  all  possible
       extensions to be loaded, which can be slow and can consume significant server resources.

       Detailed  information  about  a particular extension is displayed with the -ext extensionName option.  If extensionName is all, information
       about all extensions supported by both xdpyinfo and the server is displayed.

       If -version is specified, xdpyinfo prints its version and exits, without contacting the X server.

ENVIRONMENT

       DISPLAY To get the default host, display number, and screen.

SEE ALSO

       X(7), xprop(1), xrdb(1), xwininfo(1), xrandr(1), xdriinfo(1), xvinfo(1), glxinfo(1)

AUTHOR

       Jim Fulton, MIT X Consortium
       Support for the XFree86-VidModeExtension, XFree86-DGA, XFree86-Misc, and XKB extensions added by Joe Moss

X Version 11							  xdpyinfo 1.3.1						       XDPYINFO(1)

XEV(1)							      General Commands Manual							    XEV(1)

NAME

       xev - print contents of X events

SYNOPSIS

       xev [-display displayname] [-geometry geom] [-bw pixels] [-bs {NotUseful,WhenMapped,Always}] [-id windowid] [-s] [-name string] [-rv]

DESCRIPTION

       Xev creates a window and then asks the X server to send it events whenever anything happens to the window (such as it being moved, resized,
       typed in, clicked in, etc.).  You can also attach it to an existing window.  It is useful for seeing what causes events	to  occur  and	to
       display the information that they contain; it is essentially a debugging and development tool, and should not be needed in normal usage.

OPTIONS

       -display display
	       This option specifies the X server to contact.

       -geometry geom
	       This option specifies the size and/or location of the window, if a window is to be created.

       -bw pixels
	       This option specifies the border width for the window.

       -bs {NotUseful,WhenMapped,Always}
	       This  option  specifies	what  kind of backing store to give the window.  The default is NotUseful. Backing store refers to the the
	       pixels saved off-screen when the X server maintains the contents of a window; NotUseful means that the xev process will redraw  its
	       contents itself, as necessary.

       -id windowid
	       This option specifies that the window with the given id should be monitored, instead of creating a new window.

       -s      This  option  specifies	that save-unders should be enabled on the window. Save unders are similar to backing store, but they refer
	       rather to the saving of pixels off-screen when the current window obscures other windows. Save unders are only  advisory,  and  are
	       normally set for popup dialogs and other transient windows.

       -name string
	       This option specifies the name to assign to the created window.

       -rv     This option specifies that the window should be in reverse video.

SEE ALSO

       X(7), xwininfo(1), xdpyinfo(1), Xlib Programmers Manual, X Protocol Specification
       See X(7) for a full statement of rights and permissions.

AUTHOR

       Jim Fulton, MIT X Consortium

XFree86 							   Version 4.7.0							    XEV(1)