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ChildWindowFromPointEx info  Overview  Group

The ChildWindowFromPointEx function determines which, if any, of the child windows belonging to the specified parent window contains the specified point. The function can ignore invisible, disabled, and transparent child windows.

HWND ChildWindowFromPointEx(

    HWND hwndParent, 

// handle to parent window

    POINT pt, 

// structure with point coordinates

    UINT uFlags

// skipping flags

   );

Parameters

hwndParent
Identifies the parent window.
pt
Specifies a POINT structure that defines the client coordinates of the point to be checked.
uFlags
Specifies which child windows to skip. This parameter can be a combination of the following values:

Value

Meaning

CWP_ALL

Do not skip any child windows

CWP_SKIPINVISIBLE

Skip invisible child windows

CWP_SKIPDISABLED

Skip disabled child windows

CWP_SKIPTRANSPARENT

Skip transparent child windows

Return Values

The return value is the handle to the first child window that contains the point and meets the criteria specified by uFlags. If the point is within the parent window but not within any child window that meets the criteria, the return value is the handle to the parent window. If the point lies outside the parent window or if the function fails, the return value is NULL.

Remarks

Windows maintains an internal list that contains 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 and meets the criteria specified by uFlags.

See Also

ChildWindowFromPoint, POINT, WindowFromPoint 

See also:


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