SetWindowLong.md

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Function name : SetWindowLong

Group: Window Class - Library: user32

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Changes an attribute of the specified window. The function also sets the 32-bit (long) value at the specified offset into the extra window memory.

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Code examples:

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Declaration:

LONG SetWindowLong(
  HWND hWnd,       // handle to window
  int nIndex,      // offset of value to set
  LONG dwNewLong   // new value
);  

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FoxPro declaration:

DECLARE INTEGER SetWindowLong IN user32;
	INTEGER hWnd,;
	INTEGER nIndex,;
	INTEGER dwNewLong  

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Parameters:

hWnd [in] Handle to the window and, indirectly, the class to which the window belongs.

nIndex [in] Specifies the zero-based offset to the value to be set.

dwNewLong [in] Specifies the replacement value.

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Return value:

If the function succeeds, the return value is the previous value of the specified 32-bit integer.

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