Line problem (bug)

[Radek]

There is a problem with line exactly horizontal or vertical, there is no hand to move this line. You can try it in your SGDemo.exe application. Select "Link/Line" and draw line exactly horizontal (for example from point 10, 10 to 100, 10), then click outside of the line! Now you can't move this line, becouse there is no hand on it.

Is there any way to resolve this problem ?

[Kambiz]

I checked it out with v2.62 and didn't see any problem.

[Radek]

This problem is in 2.62 but there is more detail:
- only where line is 1 pixel
- BeginStyle = none
- EndStyle = none (!)

and this linie must be exactly horizontal or vertical (NOT across)

Could you try again.

[Radek]

Try to move this line ...

[Kambiz]

I could regenerate the bug.

To fix the problem, open SimpleGraph.pas and look for

Code: Select all

procedure TGraphLink.QueryVisualRect(out Rect: TRect);

then after

Code: Select all

  Margin := Pen.Width div 2;

insert

Code: Select all

  if Margin = 0 then Margin := 1;

Thank you!