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This event occurs at every change of limits | |
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PigGraph1Zoom(Sender: TObject; XMinBefore, XMaxBefore, YMinBefore, YMaxBefore: Real; var XMinAfter, XMaxAfter, YMinAfter, YMaxAfter: Real); Sender is the object in itself; XMinBefore, XMaxBefore, YMinBefore and YMaxBefore are the limits before; XMinAfter, XMaxAfter, YMinAfter and YMaxAfter are the new limits. You can change new limits to handle special cases or cancel the operation. | |
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{save limits to maintain an UNDO list} | |
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OnPan , OnSelection |
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