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ChildWindowFromPoint

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This function determines which, if any, of the child windows belonging to a parent window contains the specified point.

HWND ChildWindowFromPoint( 
HWND hWndParent, 
POINT Point );

Parameters

  • hWndParent
    Handle to the parent window.
  • Point
    Specifies a POINT structure that defines the client coordinates of the point to be checked.

Return Values

A handle to the child window that contains the point, even if the child window is hidden or disabled, indicates success. A handle to the parent window indicates that the point is within the parent window but not within any child window. A handle to the parent window can also indicate that the point is in the non-client area.

Remarks

The ChildWindowFromPoint function is conditionally included in the Winuser.h file if the Windows CE operating system is built to contain include files and import libraries from the Microsoft® Windows® CE Platform Builder.

The system 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, the system returns a handle to the first window in the list that contains the point.

Requirements

Runs on Versions Defined in Include Link to
Windows CE OS 1.0 and later Winuser.h    

Note   This API is part of the complete Windows CE OS package as provided by Microsoft. The functionality of a particular platform is determined by the original equipment manufacturer (OEM) and some devices may not support this API.

See Also

POINT, WindowFromPoint

 Last updated on Tuesday, July 13, 2004

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