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CWnd::accHitTest

  • 项目

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
);

Parameters

  • 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.

Return Value

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

Remarks

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.

Requirements

Header: afxwin.h

See Also

Concepts

CWnd Class

CWnd Members

Hierarchy Chart

CWnd::accLocation