 EControl Form Designer Pro |
TCustomBtnPanel.ButtonAtPos Method
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EControl Form Designer Pro |
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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