SetWindowWord info  Overview  Group

The SetWindowWord function replaces the 16-bit (word) value at the specified offset into the extra window memory for the specified window.

The GWW_ values supported by 16-bit Windows are obsolete. You must use the SetWindowLong function to set information about the window.

WORD SetWindowWord(

Parameters

hWnd

Identifies the window and, indirectly, the class to which the window belongs.

nIndex

Specifies the zero-based byte offset of the value to be replaced. Valid values are in the range zero through the number of bytes of window memory, minus two; for example, if you specified 10 or more bytes of extra window memory, a value of 8 would be an index to the fifth 16-bit integer.

wNewWord

Specifies the replacement value.

Return Values

If the function succeeds, the return value is the previous value of the specified 16-bit integer.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Remarks

Reserve extra window memory by specifying a nonzero value in the cbWndExtra member of the WNDCLASS structure used with the RegisterClass function.

See Also

GetParent, GetWindowLong, GetWindowWord, RegisterClass, SetParent, SetWindowLong, WNDCLASS