CWnd::accHitTest

Статья
10/16/2008

Called by the framework to retrieve the child element or child object at a given point on the screen.

virtual HRESULT accHitTest(
   long xLeft,
   long yTop,
   VARIANT *pvarChild
);

Параметры

xLeft
X-coordinate of the point to be hit tested (in screen units).
yTop
Y-coordinate of the point to be hit tested (in screen units).
pvarChild
Receives information identifying the object at the point specified by xLeft and yTop. See pvarID in IAccessible::accHitTest in the Windows SDK.

Возвращаемое значение

Returns S_OK on success, a COM error code on failure. See Return Values in IAccessible::accHitTest in the Windows SDK.

Заметки

This function is part of MFC's Active Accessibility support.

Override this function in your CWnd-derived class if you have nonwindowed user interface elements (other than windowless ActiveX controls, which MFC handles).

For more information, seeIAccessible::accHitTest in the Windows SDK.