JVCL Help:TJvCustomItemViewer.ItemAtPos

 JVCL Help: TJvCustomItemViewer.ItemAtPos Method

TJvCustomItemViewer

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Summary

Returns the index of the item indicated by the coordinates of a point on the control.

Pascal

 functionItemAtPos(X: Integer; Y: Integer; Existing: Boolean): Integer; virtual;

Parameters

Parameters	Description
X: Integer	The horizontal position of the item.
Y: Integer	The vertical position of the item.
Existing: Boolean	Determines if the method should return -1 or the last item plus one if there is no item at X, Y.

Return Value

The index of the control at X/Y or -1 if not found or the last item + 1 if Existing is false.

Description

Use ItemAtPos to detect if an item exists at a particular point in the control. The X and Y parameters is the point in the control in window coordinates. If C and Y is beyond the last item in the control, the value of the Existing variable determines the returned value. If Existing is set to True, ItemAtPos returns -1, indicating that no item exists at that point. If Existing is set to False, ItemAtPos returns the index of the last item in the control plus one.

See Also

TJvCustomItemViewer.IndexOf

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