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Tk_GetRootCoords(3) Tk Library Procedures Tk_GetRootCoords(3)


Tk_GetRootCoords - Compute root-window coordinates of window

#include <tk.h>

Tk_GetRootCoords(tkwin, xPtr, yPtr)

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.

coordinates, root window
Tk

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