How to display an object that links to another object

I am trying to find out how display 2 objects (box's) in a frame and connect them with a line so if I move one box the line stays connected.
Can anyone point point in the direction of any tutorials or example.
Eventually I plan to change these box's to be a database table containing attributes and the link representing the fk.

Eric_Davidson wrote:
I am trying to find out how display 2 objects (box's) in a frame and connect them with a line so if I move one box the line stays connected.
Can anyone point point in the direction of any tutorials or example.
Eventually I plan to change these box's to be a database table containing attributes and the link representing the fk.Which part do you need help with? The drawing of the boxes, the handling of the GUI, the dragging, etc?
Do you have any code started?

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How to display an object that links to another object

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