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IsChild function (winuser.h)

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Determines whether a window is a child window or descendant window of a specified parent window. A child window is the direct descendant of a specified parent window if that parent window is in the chain of parent windows; the chain of parent windows leads from the original overlapped or pop-up window to the child window.

Syntax

BOOL IsChild(
  [in] HWND hWndParent,
  [in] HWND hWnd
);

Parameters

[in] hWndParent

Type: HWND

A handle to the parent window.

[in] hWnd

Type: HWND

A handle to the window to be tested.

Return value

Type: BOOL

If the window is a child or descendant window of the specified parent window, the return value is nonzero.

If the window is not a child or descendant window of the specified parent window, the return value is zero.

Requirements

Requirement Value
Minimum supported client Windows 2000 Professional [desktop apps only]
Minimum supported server Windows 2000 Server [desktop apps only]
Target Platform Windows
Header winuser.h (include Windows.h)
Library User32.lib
DLL User32.dll
API set ext-ms-win-ntuser-window-l1-1-0 (introduced in Windows 8)

See also

Conceptual

IsWindow

Reference

SetParent

Windows