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
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