Get location and size of virtual root for window

## NAME

Tk_GetVRootGeometry - Get location and size of virtual root for window

## SYNOPSIS

#include <tk.h>

Tk_GetVRootGeometry(tkwin, xPtr, yPtr, widthPtr, heightPtr)

## ARGUMENTS

`Tk_Window tkwin` (in)
  Token for window whose virtual root is to be queried.
`int xPtr` (out)
  Points to word in which to store x-offset of virtual root.
`int yPtr` (out)
  Points to word in which to store y-offset of virtual root.
`int widthPtr` (out)
  Points to word in which to store width of virtual root.
`int heightPtr` (out)
  Points to word in which to store height of virtual root.

## DESCRIPTION

TkGetVRootGeometry returns geometry information about the virtual root window associated with tkwin. The ``associated'' virtual root is the one in which tkwin's nearest top-level ancestor (or tkwin itself if it is a top-level window) has been reparented by the window manager. This window is identified by a __SWM_ROOT or __WM_ROOT property placed on the top-level window by the window manager. If tkwin is not associated with a virtual root (e.g. because the window manager doesn't use virtual roots) then *xPtr and *yPtr will be set to 0 and *widthPtr and *heightPtr will be set to the dimensions of the screen containing tkwin.

## KEYWORDS

geometry, height, location, virtual root, width, window manager