GetTopWindow function
Examines the Z order of the child windows associated with the specified parent window and retrieves a handle to the child window at the top of the Z order.
Syntax
HWND WINAPI GetTopWindow( _In_opt_ HWND hWnd );
Parameters
- hWnd [in, optional]
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Type: HWND
A handle to the parent window whose child windows are to be examined. If this parameter is NULL, the function returns a handle to the window at the top of the Z order.
Return value
Type: Type: HWND
If the function succeeds, the return value is a handle to the child window at the top of the Z order. If the specified window has no child windows, the return value is NULL. To get extended error information, use the GetLastError function.
Requirements
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Minimum supported client | Windows 2000 Professional [desktop apps only] |
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Minimum supported server | Windows 2000 Server [desktop apps only] |
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Header |
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Library |
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DLL |
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See also
- Reference
- GetNextWindow
- GetWindow
- Conceptual
- Windows
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Build date: 2/25/2013
