Tk_GetRootCoords - Compute root-window coordinates of window
Tk_GetRootCoords(tkwin, xPtr, yPtr)
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.
coordinates, root window
- 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.
Copyright © 1990 The Regents of the University of California.
Copyright © 1994-1996 Sun Microsystems, Inc.
Copyright © 1995, 1996 Roger E. Critchlow Jr.