Qt 3.x + Qwt - Advice on programming and plotting.

[Spitfire]

Qwt up to version 6.0.0 (but not including) supports Qt3.
As far as I know online documentation for Qwt is up to date although each source code has documentation current for that version.

Anything can be used for ploting, OpenGL, QGraphicsSceen (but I think you don't have that in Qt3), or simple QWidget (in essence Qwt is QPolygon drawn on QWidget + plenty of convinience functions).
All depends on what kind of performance you're looking for.

Take a look at examples to learn Qwt, unfortunatley documentation is very vague.

[amitahire]

Qwt up to version 6.0.0 (but not including) supports Qt3.
As far as I know online documentation for Qwt is up to date although each source code has documentation current for that version.

Anything can be used for ploting, OpenGL, QGraphicsSceen (but I think you don't have that in Qt3), or simple QWidget (in essence Qwt is QPolygon drawn on QWidget + plenty of convinience functions).
All depends on what kind of performance you're looking for.

Take a look at examples to learn Qwt, unfortunatley documentation is very vague.

Thanks you VERY VERY VERY much for replying. I dont know how I missed it, didnt see it the last 2 days. Even though I was checking everyday, every single time I logged on.

Anyway coming back, just to assure myself Qwt upto 6.0.0 will work fine in qt3 right? I have to make it work on Real Time Linux - any idea about it?

And is there a Qwt plugin for Qt Designer 3.1? Though I am gonna experiment now, installing various version - but little heads up or tip would be good.

[Spitfire]

Sorry, I've no idea about RTL ;/
And yes, support for Qt3 was dropped in Qwt 6.x.x so anything before that should work just fine.

I know there's a plugin for the designer, but most time I've heard about it was mentioned in context of QtCreator on windows.
I would imagine you can use it with QtDesigner alone but you'll have to try it yourself - I personally don't use it

Here's few links that may help you, they are all for windows but you may get an idea what needs to be done:
http://doc.qt.nokia.com/qtcreator-2....g-plugins.html
http://qwt.sourceforge.net/qwtinstall.html
http://stackoverflow.com/questions/1...gin-for-qt-4-5
http://www.qtforum.org/article/20071...al-studio.html

[Uwe]

Anyway coming back, just to assure myself Qwt upto 6.0.0 will work fine in qt3 right?

Qwt 5.2 works for Qt 3.3 - Qt 3.1 is way older.

I can't remember which version of Qwt works with Qt 3.1 - I'm afraid you will have to go back in history of the Qwt releases to find the most recent version, that works for Qt 3.1.

Uwe