Tk_GetRootCoords(3) Tk Tk_GetRootCoords(3)
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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.
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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_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
coordinates, root window
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