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
}

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 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.
virtual	~TGRedirectOutputGuard ()
	Destructor.
void	Update ()
	Send to text frame the undisplayed content of the file.

Private Member Functions
	TGRedirectOutputGuard (const TGRedirectOutputGuard &)=delete
TGRedirectOutputGuard &	operator= (const TGRedirectOutputGuard &)=delete

Private Attributes
TString	fLogFile
FILE *	fLogFileRead
TGTextView *	fTextView
Bool_t	fTmpFile

#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:

• gui/gui/inc/TGRedirectOutputGuard.h
• gui/gui/src/TGRedirectOutputGuard.cxx