Tk_GetRootCoords(3Tk)					 Tk_GetRootCoords(3Tk)

NAME    [Toc]    [Back]

     Tk_GetRootCoords -	Compute	root-window coordinates	of window

SYNOPSIS    [Toc]    [Back]

     #include <tk.h>

     Tk_GetRootCoords(tkwin, xPtr, yPtr)

ARGUMENTS    [Toc]    [Back]

     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    [Toc]    [Back]

     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_GetRootCoords
     returns the root-window coordinates corresponding to location (0,0) in
     tkwin.  Tk_GetRootCoords is relatively efficient, since it	doesn't	have
     to	communicate with the X server.

KEYWORDS    [Toc]    [Back]

     coordinates, root window


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