How to Set the item has fixed line width(bigger 1 ) in QGraphicsView And not be transformed after view transformation changed?

joeQ

i just want to use QGraphicsView and QGraphicsScene to show some item.

but, i has some problem.

i want to complete this function. like the following bmp file;

alt text

help me. thank u.

Flotisable

is the box border belong to the bmp file?

joeQ

@Flotisable
no, it is a QGraphicsRectItem

joeQ

@Flotisable
I want to use QGraphicsRectItem to come true it. but QGraphicsRectItem's line width was also zoomin after view zoomin.

Flotisable

@joeQ
I remember you have find the solution

how about set the QPen's width to 0 ?

joeQ

@Flotisable
I also find QPen::setCosmetic and GraphicsItem::ItemIgnoresTransformations. . I think, them can save my problem.

I am testing these code now. hold on.

joeQ

Yes, But it caused another problem. I was crazy.

Flotisable

@joeQ
so what's the new problem?

joeQ

First, I want to save this problem item line width also zoomed after view zoom, I find the solution.

But, this solution, caused another problem screen flashing. I was crazy at yesterday.

Today, I must to save the screen flashing. I don't know ho to save it. so, i think, i was wrong at the first step.

To fixed the line width(bigger 1), I used the wrong way at first.

I find the page now. It maybe can help me.

joeQ

I am so stupid. i cost two days to save it. tried some wrong way.

I found this doc helpful.

now, i list the key wrolds

You can read them from Qt manual.