TkGetRootCoords(3) Tk Library Procedures TkGetRootCoords(3)

NAME
       TkGetRootCoords - Compute root-window coordinates of window

SYNOPSIS
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       TTkkGGeettRRoooottCCoooorrddss(tkwin, xPtr, yPtr)

AARRGGUUMMEENNTTSS
       TkWindow   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 TTkkGGeett-
       RRoooottCCoooorrddss returns the root-window coordinates corresponding  to  loca-
       tion  (0,0)  in tkwin.  TTkkGGeettRRoooottCCoooorrddss is relatively efficient, since
       it doesn't have to communicate with the X server.


KKEEYYWWOORRDDSS
       coordinates, root window



Tk                                                         TkGetRootCoords(3)