opensolaris man page for tk_coordstowindow

Tk_CoordsToWindow(3TK)					       Tk Library Procedures					    Tk_CoordsToWindow(3TK)

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NAME
       Tk_CoordsToWindow - Find window containing a point

SYNOPSIS
       #include <tk.h>

       Tk_Window
       Tk_CoordsToWindow(rootX, rootY, tkwin)

ARGUMENTS
       int	   rootX   (in)      X-coordinate (in root window coordinates).

       int	   rootY   (in)      Y-coordinate (in root window coordinates).

       Tk_Window   tkwin   (in)      Token for window that identifies application.
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DESCRIPTION
       Tk_CoordsToWindow  locates  the	window that contains a given point.  The point is specified in root coordinates with rootX and rootY (if a
       virtual-root window manager is in use then rootX and rootY are in the coordinate system of the virtual root window).  The return value from
       the  procedure  is a token for the window that contains the given point.  If the point is not in any window, or if the containing window is
       not in the same application as tkwin, then NULL is returned.

       The containing window is decided using the same rules that determine which window contains the mouse cursor:  if a parent and a child  both
       contain	the  point  then  the child gets preference, and if two siblings both contain the point then the highest one in the stacking order
       (i.e. the one that's visible on the screen) gets preference.

KEYWORDS
       containing, coordinates, root window

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +--------------------+-----------------+
       |  ATTRIBUTE TYPE    | ATTRIBUTE VALUE |
       +--------------------+-----------------+
       |Availability	    | SUNWTk	      |
       +--------------------+-----------------+
       |Interface Stability | Uncommitted     |
       +--------------------+-----------------+
NOTES
       Source for Tk is available on http://opensolaris.org.

Tk															    Tk_CoordsToWindow(3TK)