Re: TGTextBuffer

From: Fons Rademakers (Fons.Rademakers@cern.ch)
Date: Mon Jul 05 1999 - 13:11:48 MEST


Hi Takeaki,

   the current version of the ROOT GUI classes don't support I/O.
Therefore specify the ClassDef macro like:

ClassDef(MyWindow,0)

so no I/O code (i.e. Streamer() method) will be generated.

Cheers, Fons.




Takeaki Toeda wrote:
> 
> Hello ROOTers,
> 
> I have a problem with TGTextBuffer in my small graphical
> interface like a http://root.cern.ch/root/hepvis98/newgui.html
> 
> Following is essence of my header file
> 
> --------------------------------------
> #ifndef MyWindow_h
> #define MyWindow_h
> #include <TGFrame.h>
> #include <TGTextBuffer.h>
> class MyWindow : public TGMainFrame {
>  protected:
>   TGTextBuffer *fNameBuf;
> 
>  public:
>   MyWindow(const TGWindow *p, UInt_t w, UInt_t h);
>   virtual ~MyWindow();
>  public:
>   ClassDef(MyWindow,1)
> };
> #endif
> 
> ---------------------------------------
> 
> #ifdef __CINT__
> 
> #pragma link off all globals;
> #pragma link off all classes;
> #pragma link off all functions;
> 
> #pragma link C++ class MyWindow;
> 
> #endif
> 
> ---------------------------------------
> 
> When a generated source file from rootcint is compiled,
> following error is output
> 
> -------------------------------------------
> Generating dictionary
> rootcint RootCint.cc -c MyWindow.h  LinkDef.h
> Note: operator new() masked 1c
> Note: operator delete() masked 1c
> g++ -O -Wall -fno-rtti -fPIC -I/opt/root/include -I. RootCint.cc -c
> RootCint.cc: In method `void MyWindow::Streamer(class TBuffer &)':
> RootCint.cc:32: no match for `TBuffer & << TGTextBuffer *&'
> /opt/root/include/TBuffer.h:206: candidates are: TBuffer::operator
> <<(Char_t)
> /opt/root/include/TBuffer.h:316:                 TBuffer::operator
> <<(UChar_t)
> /opt/root/include/TBuffer.h:215:                 TBuffer::operator
> <<(Short_t)
> /opt/root/include/TBuffer.h:319:                 TBuffer::operator
> <<(UShort_t)
> /opt/root/include/TBuffer.h:224:                 TBuffer::operator
> <<(Int_t)
> /opt/root/include/TBuffer.h:322:                 TBuffer::operator
> <<(UInt_t)
> /opt/root/include/TBuffer.h:233:                 TBuffer::operator
> <<(Long_t)
> /opt/root/include/TBuffer.h:325:                 TBuffer::operator
> <<(ULong_t)
> /opt/root/include/TBuffer.h:242:                 TBuffer::operator
> <<(Float_t)
> /opt/root/include/TBuffer.h:251:                 TBuffer::operator
> <<(Double_t)
> /opt/root/include/TBuffer.h:260:                 TBuffer::operator
> <<(const Char_t *)
> /opt/root/include/TBuffer.h:342:                 operator <<(TBuffer &,
> const TObject *)
> /opt/root/include/TString.h:314:                 operator <<(ostream &,
> const TString &)
> gmake: *** [RootCint.o] Error 1
> 
> --------------------------------------------------------------
> 
> Do you know how to slove this problem?
> Or is this bug?
> 
> Thanks,
> 
> Take-Aki TOEDA
> Nagoya Univ.
> Nagoya Japan
> 

-- 
Org:    CERN, European Laboratory for Particle Physics.
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E-Mail: Fons.Rademakers@cern.ch              Phone: +41 22 7679248
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