[webkit-help] Can't get the render style via hit test?

[eacanhe]

Hi, all
Here I got a problem.
When I get the clicked node via hitTestResultAtPoint func:
    WebCore::HitTestResult result = pFrame->eventHandler()->hitTestResultAtPoint(
        point, 
        false, /*allowShadowContent*/ 
        true); /*ignoreClipping*/



And from the object "result", I wanna get the z-index of the "reusle" node:
    WebCore::Node* hitNode = result.innerNode();
    WebCore::Node* hitNonSharedNode = result.innerNonSharedNode();
    int hitZ = hitNode->renderStyle()->zIndex();
    int hitNonSharedZ = hitNonSharedNode->renderStyle()->zIndex();




But, no matter where i click,  the obj "hitZ" and "hitNonSharedZ" are zero.


Is  there something wrong? Some one can tell me how can I get the z-index of the node I Click on.


Any help appreciated. :D
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