ChildWindowFromPoint
The ChildWindowFromPoint
function determines which, if any, of the child windows belonging to a parent
window contains the specified point.
HWND ChildWindowFromPoint(
|
HWND hWndParent, |
// handle to parent
window |
|
POINT Point |
// structure with
point coordinates |
|
); |
|
Parameters
hWndParent
Identifies
the parent window.
Point
Specifies a POINT structure that defines the
client coordinates of the point to be checked.
Return Values
If the
function succeeds, the return value is the handle of the child window that contains
the point, even if the child window is hidden or disabled. If the point lies
outside the parent window, the return value is NULL. If the point is within the
parent window but not within any child window, the return value is the handle
to the parent window.
Remarks
Windows
maintains an internal list, containing the handles of the child windows
associated with a parent window. The order of the handles in the list depends
on the Z order of the child windows. If more than one child window contains the
specified point, Windows returns the handle of the first window in the list
that contains the point.
See Also