Tk4.2 C API Man Page -- GetRootCrd (n)
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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 xcoordinate corresponding to left edge of tkwin's border.

int
*yPtr (out) Pointer to location in which to store root-window ycoordinate 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_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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