vlc web plugin mouse event for IE

Use vlc activex plugin for IE webpage,I have tried very hard for catching mouse click event in the video area on the webpage. For onmouseover/onmousemove/onmouseout can be listened. But onclick/ondbclick/onmousedown/onmouseup can not be.

I have tried with local programing, attach the follow codes in file \modules\video_output\msw\events.c under the code:case WM_LBUTTONDOWN:

{
                POINT pt;
                pt.x = GET_X_LPARAM(msg.lParam);
                pt.y = GET_Y_LPARAM(msg.lParam);
                ClientToScreen(msg.hwnd, &pt);
                ScreenToClient(vd->sys->hparent, &pt);

                PostMessage(vd->sys->hparent, WM_LBUTTONDOWN, msg.wParam, MAKELPARAM(pt.x, pt.y));
 }   

But still not work. Is there anyone farmiliar with this issue?