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Reference Guide
TGRedirectOutputGuard Class Reference

This class provides output redirection to a TGTextView in guaranteed exception safe way.

Use like this:

{
TGRedirectOutputGuard guard(textview);
... // do something
guard.Update();
... // do something else
}
This class provides output redirection to a TGTextView in guaranteed exception safe way.

when guard goes out of scope, Update() is called to flush what left on the screed and the output is automatically redirected again to the standard units. The exception mechanism takes care of calling the dtors of local objects so it is exception safe. Optionally the output can also be saved into a file:

{
TGRedirectOutputGuard guard(textview, file, mode);
... // do something
}
Definition: file.py:1

Definition at line 20 of file TGRedirectOutputGuard.h.

Public Member Functions

 TGRedirectOutputGuard (TGTextView *tv, const char *flog=nullptr, const char *mode="a")
 Create output redirection guard. More...
 
virtual ~TGRedirectOutputGuard ()
 Destructor. More...
 
void Update ()
 Send to text frame the undisplayed content of the file. More...
 

Private Member Functions

 TGRedirectOutputGuard (const TGRedirectOutputGuard &)=delete
  More...
 
TGRedirectOutputGuardoperator= (const TGRedirectOutputGuard &)=delete
  More...
 

Private Attributes

TString fLogFile
  More...
 
FILE * fLogFileRead
  More...
 
TGTextViewfTextView
  More...
 
Bool_t fTmpFile
  More...
 

#include <TGRedirectOutputGuard.h>

Constructor & Destructor Documentation

◆ TGRedirectOutputGuard() [1/2]

TGRedirectOutputGuard::TGRedirectOutputGuard ( const TGRedirectOutputGuard )
privatedelete

◆ TGRedirectOutputGuard() [2/2]

TGRedirectOutputGuard::TGRedirectOutputGuard ( TGTextView tv,
const char *  flog = nullptr,
const char *  mode = "a" 
)

Create output redirection guard.

The TGTextView instance should be initialized outside. Text is added to the existing text in the frame. If defined, 'flog' is interpreted as the path of a file where to save the output; in such a case 'mode' if the opening mode of the file (either "w" or "a"). By default a temporary file is used.

Definition at line 67 of file TGRedirectOutputGuard.cxx.

◆ ~TGRedirectOutputGuard()

TGRedirectOutputGuard::~TGRedirectOutputGuard ( )
virtual

Destructor.

Definition at line 121 of file TGRedirectOutputGuard.cxx.

Member Function Documentation

◆ operator=()

TGRedirectOutputGuard& TGRedirectOutputGuard::operator= ( const TGRedirectOutputGuard )
privatedelete

◆ Update()

void TGRedirectOutputGuard::Update ( )

Send to text frame the undisplayed content of the file.

Definition at line 141 of file TGRedirectOutputGuard.cxx.

Member Data Documentation

◆ fLogFile

TString TGRedirectOutputGuard::fLogFile
private

Definition at line 23 of file TGRedirectOutputGuard.h.

◆ fLogFileRead

FILE* TGRedirectOutputGuard::fLogFileRead
private

Definition at line 26 of file TGRedirectOutputGuard.h.

◆ fTextView

TGTextView* TGRedirectOutputGuard::fTextView
private

Definition at line 25 of file TGRedirectOutputGuard.h.

◆ fTmpFile

Bool_t TGRedirectOutputGuard::fTmpFile
private

Definition at line 24 of file TGRedirectOutputGuard.h.

Libraries for TGRedirectOutputGuard:
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The documentation for this class was generated from the following files: