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Info about last error information reset #2146

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1 change: 1 addition & 0 deletions sdk-api-src/content/winuser/nf-winuser-getnextwindow.md
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Expand Up @@ -102,6 +102,7 @@ Returns a handle to the window above the given window.
Type: <b>HWND</b>

If the function succeeds, the return value is a window handle. If no window exists with the specified relationship to the specified window, the return value is <b>NULL</b>. To get extended error information, call <a href="/windows/desktop/api/errhandlingapi/nf-errhandlingapi-getlasterror">GetLastError</a>.
The function does not clear the last error information. To determine success or failure in case of <b>NULL</b> return value, clear the last error information by calling <a href="/windows/desktop/api/errhandlingapi/nf-errhandlingapi-setlasterror">SetLastError</a> function with 0 value, then call <b>GetNextWindow</b>. Function failure will be indicated by a return value of <b>NULL</b> and a <a href="/windows/desktop/api/errhandlingapi/nf-errhandlingapi-getlasterror">GetLastError</a> function result that is nonzero.

## -remarks

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1 change: 1 addition & 0 deletions sdk-api-src/content/winuser/nf-winuser-gettopwindow.md
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Expand Up @@ -74,6 +74,7 @@ A handle to the parent window whose child windows are to be examined. If this pa
Type: <b>HWND</b>

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 <b>NULL</b>. To get extended error information, use the <a href="/windows/desktop/api/errhandlingapi/nf-errhandlingapi-getlasterror">GetLastError</a> function.
The function does not clear the last error information. To determine success or failure in case of <b>NULL</b> return value, clear the last error information by calling <a href="/windows/desktop/api/errhandlingapi/nf-errhandlingapi-setlasterror">SetLastError</a> function with 0 value, then call <b>GetTopWindow</b>. Function failure will be indicated by a return value of <b>NULL</b> and a <a href="/windows/desktop/api/errhandlingapi/nf-errhandlingapi-getlasterror">GetLastError</a> function result that is nonzero.

## -see-also

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1 change: 1 addition & 0 deletions sdk-api-src/content/winuser/nf-winuser-getwindow.md
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Expand Up @@ -177,6 +177,7 @@ The retrieved handle identifies the specified window's owner window, if any. For
Type: <b>HWND</b>

If the function succeeds, the return value is a window handle. If no window exists with the specified relationship to the specified window, the return value is <b>NULL</b>. To get extended error information, call <a href="/windows/desktop/api/errhandlingapi/nf-errhandlingapi-getlasterror">GetLastError</a>.
The function does not clear the last error information. To determine success or failure in case of <b>NULL</b> return value, clear the last error information by calling <a href="/windows/desktop/api/errhandlingapi/nf-errhandlingapi-setlasterror">SetLastError</a> function with 0 value, then call <b>GetWindow</b>. Function failure will be indicated by a return value of <b>NULL</b> and a <a href="/windows/desktop/api/errhandlingapi/nf-errhandlingapi-getlasterror">GetLastError</a> function result that is nonzero.

## -remarks

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