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TTM_WINDOWFROMPOINT Overview  Group

The TTM_WINDOWFROMPOINT message allows a subclass procedure to cause a ToolTip to display text for a window other than the one beneath the mouse cursor. 

TTM_WINDOWFROMPOINT 

wParam = 0; 

lParam = (POINT FAR *) lppt; 

 

Parameters

lppt
Pointer to a POINT structure that defines the point to be checked.

Return Values

The return value is the handle to the window that contains the point, or NULL if no window exists at the specified point.

Remarks

This message is intended to be processed by an application that subclasses a ToolTip. It is not intended to be sent by an application. A ToolTip sends this message to itself before displaying the text for a window. By changing the coordinates of the point specified by lppt, the subclass procedure can cause the ToolTip to display text for a window other than the one beneath the mouse cursor.

See Also

POINT 

file: /Techref/os/win/api/win32/mess/src/msg20_9.htm, 1KB, , updated: 2000/4/7 12:20, local time: 2023/6/10 06:24,
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