Public Event MouseDown( _
    ByVal Button As short, _
    ByVal Shift As short, _
    ByVal X As Integer, _
    ByVal Y As Integer _
) 

public void MouseDown(
    short Button,
    short Shift,
    int X,
    int Y
);

public: void MouseDown(
    short Button,
    short Shift,
    int X,
    int Y
);

public void mouseDown(
    short Button,
    short Shift,
    int X,
    int Y
);

public: void MouseDown(
    short  Button,
    short  Shift,
    OLE_XPOS_PIXELS  X,
    OLE_YPOS_PIXELS  Y
);