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Visual Graph Getting Started
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Use Line Vertexes
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Call Visual Graph Functions
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Drag Graph in Run Mode
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Visual Graph Getting Started - Drag Graph in Run Mode

Please follow these steps to implement it.

1. Create a new file in Visual Graph IDE, and then draw a circle (basic element in library group) in this document.

2. Select current sheet by click the blank, and then click Functions tab at left and double-click Initialize function, write the following script:

FStartX = 0
FStartY = 0

3. Select this circle, and then click OnLButtonDown function, write the following script:

Sender.Tag = 1
FStartX = X
FStartY = Y

4. As above, add the following code to the circle's OnLButtonUp event:

Sender.Tag = 0

5. As above, add the following code to the circle's OnMouseMove event:

if Sender.Tag = 1 then
Sender.MoveBy( X - FStartX, Y - FStartY )
FStartX = X
FStartY = Y
end if

6. Click Program -> Run, now you can drag this circle by mouse.

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