Sets or retrieves the x-coordinate of the mouse pointer, or user's finger, position relative to the client area of the window, excluding window decorations and scroll bars. For the standards based property, see IDOMMouseEvent::clientX.
HRESULT value = object.put_clientX( v);HRESULT value = object.get_clientX(* p);
the x-coordinate, in pixels.
Because the IHTMLEventObj2::clientX property returns a value relative to the client, you can add the value of the IHTMLElement2::scrollLeft property to determine the distance of the x-coordinate from the edge of the body element.
Within a viewlink, the client area begins at the edge of the master element.