Tk_GetRootCoords(3) Tk Library Procedures 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 does not have to communicate with the X server.

KEYWORDS

coordinates, root window

Tk Tk_GetRootCoords(3)