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RAD Studio VCL Reference
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TControl.ParentToClient Method
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RAD Studio VCL Reference
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Translate parent coordinates to client coordinates.
function ParentToClient(const Point: TPoint; AParent: TWinControl = nil): TPoint;
__fastcall TPoint ParentToClient(const TPoint Point, TWinControl * AParent = nil);
ParentToClient translates Point from the AParent's coordinate system to the current control's coordinate system. AParent must be a control that can be found by iterating up the chain of Parent properties. If AParent is nil (Delphi) or NULL (C++), the control's immediate parent is used.
An EInvalidOperation exception is thrown if AParent is not an ancestor control or the Parent property is nil (Delphi) or NULL (C++).
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Copyright(C) 2009 Embarcadero Technologies, Inc. All Rights Reserved.
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Description