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TCustomBtnPanel.ButtonAtPos Method

Returns the index of the button indicated by the coordinates of a point on the panel.

function ButtonAtPos(Pos: TPoint): integer;

Use ButtonAtPos to detect if a button exists at a particular point in the underlying panel. 

 

The Pos parameter is the point in the panel in window coordinates. 

If Pos is out of buttons coordinates, ButtonAtPos returns -1, otherwise it returns absolute index of underlying button. 

 

ButtonAtPos is used internally for TCustomBtnPanel purposes, i.e. in TCustomBtnPanel.MouseDown and TCustomBtnPanel.WMMouseMove procedures to determine particular button for subsequent operations.

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