RAD Studio VCL Reference
TControl.ClientOrigin Property

Specifies the screen coordinates (in pixels) of the top left corner of a control's client area.

property ClientOrigin: TPoint;
__property TPoint ClientOrigin;

Read ClientOrigin to locate the top-left corner of the control's client area. ClientOrigin returns X and Y coordinates as a TPoint type, where X specifies the horizontal coordinate of the point and Y specifies the vertical coordinate.  

The screen coordinates of a control that is descended from TControl and not TWinControl are the screen coordinates of the control's parent added to its Left and Top properties. If the control doesn't have a parent, an EInvalidOperation exception is raised when ClientOrigin is read. 


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