Tk_CoordsToWindow - Find window containing a point
#include <tk.h>
Tk_Window
Tk_CoordsToWindow(rootX, rootY, tkwin)
- 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.
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.
containing, coordinates, root window
Copyright © 1990-1993 The Regents of the University of California.
Copyright © 1994-1996 Sun Microsystems, Inc.
Copyright © 1995-1997 Roger E. Critchlow Jr.
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