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IsChild The IsChild function tests 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.
VB4-32,5,6
Declare Function IsChild Lib "user32" Alias "IsChild" (ByVal hWndParent As Long, ByVal hwnd As Long) As Long |
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Operating Systems Supported |
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Requires Windows NT 3.1 or later; Requires Windows 95 or later |
- hWndParent
Identifies the parent window.
- hWnd
Identifies the window to be tested. |
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. |
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