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Tk_GetRootCoords(3tk) Tk Library Procedures Tk_GetRootCoords(3tk) 





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.
    
    

    

  








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