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fanqing 2005-02-19
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GetParent
waterpub 2005-02-19
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The GetParent function retrieves a handle to the specified window's parent or owner.
To retrieve a handle to a specified ancestor, use the GetAncestor function.
Syntax
HWND GetParent( HWND hWnd
);
Parameters
hWnd
[in] Handle to the window whose parent window handle is to be retrieved.
Return Value
If the window is a child window, the return value is a handle to the parent window. If the window is a top-level window, the return value is a handle to the owner window. If the window is a top-level unowned window or if the function fails, the return value is NULL. To get extended error information, call GetLastError. For example, this would determine, when the function returns NULL, if the function failed or the window was a top-level window.
Remarks
Note that, despite its name, this function can return an owner window instead of a parent window. To obtain the parent window and not the owner, use GetAncestor with the GA_PARENT flag.
To retrieve a handle to a specified ancestor, use the GetAncestor function.
Syntax
HWND GetParent( HWND hWnd
);
Parameters
hWnd
[in] Handle to the window whose parent window handle is to be retrieved.
Return Value
If the window is a child window, the return value is a handle to the parent window. If the window is a top-level window, the return value is a handle to the owner window. If the window is a top-level unowned window or if the function fails, the return value is NULL. To get extended error information, call GetLastError. For example, this would determine, when the function returns NULL, if the function failed or the window was a top-level window.
Remarks
Note that, despite its name, this function can return an owner window instead of a parent window. To obtain the parent window and not the owner, use GetAncestor with the GA_PARENT flag.
