indipendent output

[salvo]

Hi,

I made a little program in C++, which initially displayed its data to the
standard output with the cout object. Now that I added a little graphic
interface with gtk+, I'd like to keep the class code as indipendent as
possible. This way, I could leave both version, graphic and not.

In the graphic version, every object would output its data to the
text_view object, while in the no-graphic version, it would output its
data to the standard output with cout. How can I do this ?

Any suggestions?

Thanks in advance
Salvo

 

[Thomas Matthews]

Hi,

I made a little program in C++, which initially displayed its data to the
standard output with the cout object. Now that I added a little graphic
interface with gtk+, I'd like to keep the class code as indipendent as
possible. This way, I could leave both version, graphic and not.

In the graphic version, every object would output its data to the
text_view object, while in the no-graphic version, it would output its
data to the standard output with cout. How can I do this ?

Any suggestions?

Thanks in advance
Salvo

Yes, derive a class from streambuf which will write
to the UI. An instance of this class can be passed
around wherever an ostream class is required.

Read the FAQs and welcome.txt for guidelines. Also
search the web for Dietmar Kuhl, who is an expert
in this area. His website contains an example of
creating a specialized stream class.

--
Thomas Matthews

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Other sites:
http://www.josuttis.com -- C++ STL Library book
http://www.sgi.com/tech/stl -- Standard Template Library

 

[salvo]

Yes, derive a class from streambuf which will write

to the UI. An instance of this class can be passed
around wherever an ostream class is required.

Read the FAQs and welcome.txt for guidelines. Also
search the web for Dietmar Kuhl, who is an expert
in this area. His website contains an example of
creating a specialized stream class.

Thank you! It seems to be exactly what I needed.

Salvo