tk_idtowindow(3) [redhat man page]

Tk_IdToWindow(3)					       Tk Library Procedures						  Tk_IdToWindow(3)

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NAME

       Tk_IdToWindow - Find Tk's window information for an X window

SYNOPSIS

       #include <tk.h>

       Tk_Window
       Tk_IdToWindow(display, window)

ARGUMENTS

       Display *display (in)	       X display containing the window.

       Window window (in)	       X id for window.
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DESCRIPTION

       Given  an  X window identifier and the X display it corresponds to, this procedure returns the corresponding Tk_Window handle.  If there is
       no Tk_Window corresponding to window then NULL is returned.

KEYWORDS

       X window id

Tk									4.0							  Tk_IdToWindow(3)

Tk_CoordsToWindow(3)					       Tk Library Procedures					      Tk_CoordsToWindow(3)

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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

Tk															      Tk_CoordsToWindow(3)