Library Procedures - Tk_GetRootCoords manual page

Tcl/Tk

previous page next page

Tcl/Tk Applications | Tcl Commands | Tk Commands | Tcl Library | Tk Library

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.

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

previous page start next page