Hello Martijn,
>
> Though very interesting, it seems we misunderstood each other. my,
>
> > Could we than not imagine either writing the file entirely to some
> buffer
> > or even just make a temporary copy of it?
>
> dealt with the problem of Root not releiving the C++ scripts once
loaded,
> problem apparently taken care of by Masa.
Oppps, I am sorry :-(
Apparently I was reading your message from corner to corner :-)
> My
> >I will be looking at QtRoot this afternoon, yet I use the Root
widget
> > librairy extensively: is that supported?
I missed this topic, sorry.
No the stable version of ROOT 3.10.02 with Qt Layer for Windows from
http:://root.bnl.gov doesn't support ROOT widget library yet.
At the moment the "ROOT widget library" for windows is provided by GDK
version only.
See:
http://root.bnl.gov/QtRoot/QtRoot.html#tguiclass
In fact it was not a goal of the QtRoot project. Rene is correct.
Hope this helps.
Valeri
>
> dealt with your request whether I could try my problems on QtRoot,
which I
> did a little earlier with given results.
> Thanks anyway,
>
> Martijn
>
>
>
> A 10:52 15/06/2004 -0400, Valeri Fine a écrit :
> > >
> > > Hi Valeri,
> > >
> > > Could we than not imagine either writing the file entirely to some
> >buffer
> > > or even just make a temporary copy of it?
> > > I will be looking at QtRoot this afternoon, yet I use the Root
widget
> > > librairy extensively: is that supported?
> > >
> >
> >
> >ROOT applies so-called double buffered technique for TCanvas client
> >areas.
> >This means all "TCanvas/TPad" images first are stored with some
"pixmap"
> >array and then the filled "pixmap" is painted to the screen.
> >In fact that "pixmap" is the "off-screen buffer" you are speaking
about.
> >
> >TVirtualX class provides a method to create and copy such pixmaps
> >http://root.cern.ch/root/htmldoc/TVirtualX.html#TVirtualX:CopyPixmap
> >
> >and write it to the file later
> >
> >http://root.cern.ch/root/htmldoc/TVirtualX.html#TVirtualX:WritePixmap
> >
> >That may be sufficient for your task I don't know.
> >
> >So far so good. But the problem is the format of the "pixmap" is
> >platform depended.
> >This means under X11 ROOT does X-pixmap, under Win32 it is "Windows
> >pixmap",
> >with the Qt layer you can get the pointer to QPixmap object etc.
> >
> >At this point you have several ways to go, namely,
> >
> > 1. You don't care about that cross-platform features and want to
stick
> >some particular one (for example X11).
> > 2. You can use TImage class that is a ROOT interface to the
various
> >"image" objects
> > 3. You opt for Qt layer to use QPixmap class (that is available
for
> >all platforms the Trolltech supports
> > see: http://root.bnl.gov/QtRoot/QtRoot.html#cross
> >
> >The xform.CC macro that comes with Qt layer distribution does show
how
> >to do what you want, namely, how to pick the QPixmap filled with TPad
> >image and customize it elsewhere. One can easily try this version but
> >installing it to some Windows machine (Just click
> >http://root.bnl.gov/QtRoot/downloads/root.3.10.02.exe.
> >That should take about 2-3 min of your time. If it takes more then
send
> >me a bug report :-)
> >
> >See:
> >http://doc.trolltech.com/3.3/qpixmap.html#save
> >http://root.bnl.gov/QtRoot/QtRoot.html#signal
> >http://root.bnl.gov/QtRoot/QtRoot.html#embed
> >http://root.bnl.gov/QtRoot/QtRoot.html#qt
> >
> >also
> >
> > Hope this helps, Valeri
> >
> >
> > > Thanks to all,
> > >
> > > Martijn
> > >
> > > At 16:17 14/06/2004 -0400, Valeri Fine wrote:
> > > > >
> > > > > Hi Rooters,
> > > > >
> > > > > I forgot about just another annoying feature I encoutered with
the
> > > >windows
> > > > > version. Once a script is loaded and at some point the
execution
> > > >failed,
> > > > > root does not leave the script so it becomes impossible to
access
> >that
> > > > > script for writing purpose anymore.
> > > >
> > > >
> > > >It is not ROOT feature. It is a feature of Windows file system.
If
> >some
> > > >file is OPEN somewhere it can NOT be re-open again to WRITE
unless it
> >is
> > > >closed.
> > > >
> > > >I am afraid to do what you want ROOT will have to open and close
the
> > > >file after each line it reads in.
> > > >
> > > >Just my 2 cents :-(
> > > >
> > > > Valeri
> > > >
> > > > > This makes the user having to quit his
> > > > > root session before he can correct his mistake. I did not have
> >such
> > > > > problems with the Linux versions.
> > > > >
> > > > > Thanks a lot,
> > > > >
> > > > > Martijn
> > > > >
> > > > > >Date: Mon, 14 Jun 2004 18:44:10 +0200
> > > > > >To: roottalk@cern.ch
> > > > > >From: Martijn Schellekens
<Martijn.Schellekens@iota.u-psud.fr>
> > > > > >Subject: [ROOT] Problems with windows version
> > > > > >
> > > > > >Hi Rooters,
> > > > > >
> > > > > >I'm experiencing difficulties with the gSystem->SetBuildDir()
> > > >function
> > > > > >under windows 2000.
> > > > > >Versions tried have been both 4.00/06a and 3.10/02. My files
> >simply
> > > >dont
> > > > > >compile as root can not find its own created header files
back.
> > > > > >(command used was an absolute path:
> > > >gSystem->SetBuildDir("c:/Root/Mlib") )
> > > > > >
> > > > > >In terms of other annoying features in the windows version:
> >sometimes
> > > > > >something goes wrong with the displaying of the compiler
messages
> > > >inside
> > > > > >the terminal. Those become simply unreadable. Windows version
is
> >the
> > > > > >french version of 2000.
> > > > > >I have by that way a question for the windows users: are
there
> >any
> > > >better
> > > > > >windows terminal emulators than those provided by the base
> >operating
> > > >system?
> > > > > >
> > > > > >Last and also the least: Xinerama doesn't seem to be
supported in
> >the
> > > >gdk
> > > > > >librairy for windows (I only checked this for the windows
> >version).
> > > >Hence
> > > > > >if I open a ComboBox on a second screen, it will open this
> >combobox
> > > >on my
> > > > > >main screen. I dont really care about this but I just wanted
to
> > > >notify it.
> > > > > >
> > > > > >Thanks a lot anyway for the job done,
> > > > > >
> > > > > >Martijn Schellekens
> > > > > >
> > > > > >PS: Rene, I did get your reply to my question on recursive
fits
> >from
> > > >your
> > > > > >website. I filled in the request form with a wrong adress.
> > > > > >I thank you very much.
This archive was generated by hypermail 2b29 : Sun Jan 02 2005 - 05:50:08 MET