life2die4 0 Newbie Poster

I am begginer at C++.I need some help with some parts of my program.
Afeter I draw a table on the canvas propety of the forum I have to move a TShape over the table.The problem is whenever I move the Shape some parts of the table are getting erased.The part of the canvas that is under the shape.Where I am doing wrong?I am using C++Builder.
Thank you for the help in advance

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