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void FireClickIn(OLE_XPOS_PIXELS xCoord, OLE_YPOS_PIXELS yCoord)
{FireEvent(eventidClickIn,EVENT_PARAM(VTS_XPOS_PIXELS VTS_YPOS_PIXELS), xCoord, yCoord);}
EVENT_CUSTOM("ClickIn", FireClickIn, VTS_XPOS_PIXELS VTS_YPOS_PIXELS)
[id(1)] void ClickIn(OLE_XPOS_PIXELS xCoord, OLE_YPOS_PIXELS yCoord);
void CSampleCtrl::OnLButtonDown(UINT nFlags, CPoint point)
{
if (InCircle(point))
FireClickIn(point.x, point.y); //这里触发了这个事件?!
COleControl::OnLButtonDown(nFlags, point);
}