Hi Valeri, 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. My >I will be looking at QtRoot this afternoon, yet I use the Root widget > librairy extensively: is that supported? 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.
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