Tk_GetRootCoords(3tk)

______________________________________________________________________________

NAME

       Tk_GetRootCoords - Compute root-window coordinates of window

SYNOPSIS

       #include <tk.h>

       Tk_GetRootCoords(tkwin, xPtr, yPtr)

ARGUMENTS

       Tk_Window   tkwin   (in)      Token for window.

       int         *xPtr   (out)     Pointer  to  location  in  which to store
                                     root-window x-coordinate corresponding to
                                     left edge of tkwin's border.

       int         *yPtr   (out)     Pointer  to  location  in  which to store
                                     root-window y-coordinate corresponding to
                                     top edge of tkwin's border.
_________________________________________________________________

DESCRIPTION

       This  procedure  scans through the structural information maintained by
       Tk to compute the root-window coordinates corresponding to  the  upper-
       left  corner  of  tkwin's border.  If tkwin has no border, then Tk_Get-
       RootCoords returns the root-window coordinates corresponding  to  loca-
       tion  (0,0)  in tkwin.  Tk_GetRootCoords is relatively efficient, since
       it doesn't have to communicate with the X server.

KEYWORDS

       coordinates, root window

Tk                                                         Tk_GetRootCoords(3)