Re: How to update both the Console and the GTKMM gui window after running other functions

["L. D. James" <ljames apollo3 com>]

Thanks, Ian.  This is a great start.  I'll spend some time trying to figure out how to output to a text window or label rather than the graphics bar.

I knew this was possible.  I'm very surprise it's so hard to find a natural way to do it with actual text.

After I get it done, I'll post the resolution back to the group for anyone else that is stuck.

-- L. James

-- 
L. D. James
ljames apollo3 com
www.apollo3.com/~ljames

On Wed, 2013-07-31 at 12:48 +1200, Ian Martin wrote:
> Hi,
> Have you looked at the code for the progress bar example?
> https://developer.gnome.org/gtkmm-tutorial/stable/sec-progressbar.html.en
>
> Ian.
>
> On 31/07/13 09:33, L. D. James wrote:
> > On 07/30/2013 04:53 PM, Moh B. wrote:
> >> //main.cpp:
> >> //-----------
> >> // Look at this modified code and pay attention to the order of
> >> execution and call th the functions
> >> #include <gtkmm.h>
> >> #include <iostream>
> >>
> >> using namespace std;
> >>
> >> int main(int argc, char* argv[])
> >> {
> >>          Gtk::Main kit(argc, argv);
> >>
> >>          Gtk::Window window;
> >>          Gtk::TextView textview;
> >>          Gtk::Label label;
> >>
> >>    string mylabeltext = "This is the first line of text in my gui
> >> window.\n";
> >>
> >>          window.set_default_size(600, 360);
> >>          window.set_title("Gtkmm Programming - C++");
> >>          window.set_position(Gtk::WIN_POS_CENTER);
> >>
> >>          label.show();
> >>          window.add(label);
> >>
> >>          label.set_text(mylabeltext);
> >>
> >>          mylabeltext += "About to run some routines...\n";
> >>
> >>          label.set_text(mylabeltext);
> >>
> >>          cout << "An initial line has been set to the gui window." <<
> >> endl;
> >>          // The Gui Window is displayed
> >>    //==> YOURS      Gtk::Main::run(window);
> >>    // Now my main program has performed some functions and wants to
> >> update
> >>          // the console and the gui window.
> >>      cout << "Continuing after various functions and processing..." <<
> >> endl;
> >>           //A MODIFICATION HERE '+=' instead of yours '=''
> >>          mylabeltext += "Showing the results of the functions and
> >> processing.";
> >>          label.set_text(mylabeltext);
> >>   // AND NOW
> >>     Gtk::Main::run(window);
> >>          return 0;
> >> }
> >> //----------------------------------------------
> >> //code end
> >>
> >> /////////////// Makefile ///////////////////
> >> #Begin of Makefile
> >> all:
> >>
> >>     @echo " "
> >>     @echo " 1- Compiling..."
> >>     g++ -Wall -g -c *.cpp `pkg-config gtkmm-3.0 --cflags`
> >>
> >>     @echo " "
> >>     @echo " 2- Linking..."
> >>     g++ -Wall -g *.o `pkg-config gtkmm-3.0 --libs` -o
> >> Gtkmm34-popup-menu-test
> >>
> >>     @echo " "
> >>     @echo " DONE!!!";
> >> #    @echo " "
> >>     chmod +x Gtkmm34-popup-menu-test
> >>     ls . -all
> >>
> >> clean:
> >>     rm *.o Gtkmm34-popup-menu-test
> >>
> >> /////////////// Makefile ///////////////////
> >> #End of Makefile
> >>
> >
> > How are you doing, Moh B.
> >
> > I believe you misunderstood my problem.  I can output all the text out 
> > to the gui window without problems.  However, what I'm trying to do is 
> > output the text after an operation has taken place.  I should have put 
> > sleep() functions to represent some operation taking place.  I want to 
> > give the user a status of what is taking place between operations.
> >
> > I updated the code to better represent this.
> >
> > At present I see the output at each stage on the console. However, the 
> > gui window isn't updated.  It doesn't show anything until after all 
> > the functions have completed (in this case sleep() functions.
> >
> > In the actually program some of the functions will take a few minutes 
> > and some of them might take over an hour.  I don't want the user to be 
> > left with a no status update for the entire time, or between operations.
> >
> > Notice how the console is output immediately.  Then a sleep function.  
> > Then the status is updated again informing the user how long the 
> > function took.  Then another function (in this case a sleep() function.
> >
> > //code begin:
> > //main.cpp:
> > //-----------
> > // Look at this modified code and pay attention to the order of 
> > execution and call th the functions
> > #include <gtkmm.h>
> > #include <iostream>
> >
> > using namespace std;
> >
> > int main(int argc, char* argv[])
> > {
> >     Gtk::Main kit(argc, argv);
> >
> >     Gtk::Window window;
> >     Gtk::TextView textview;
> >     Gtk::Label label;
> >
> >     string mylabeltext = "This is the first line of text in my 
> > guiwindow.\n";
> >
> >     window.set_default_size(600, 360);
> >     window.set_title("Gtkmm Programming - C++");
> >     window.set_position(Gtk::WIN_POS_CENTER);
> >
> >     label.show();
> >     window.add(label);
> >
> >     label.set_text(mylabeltext);
> >
> >     mylabeltext += "About to run some routines...\n";
> >
> >     label.set_text(mylabeltext);
> >
> >     cout << "An initial line has been set to the gui window." << endl;
> >
> >     sleep(60); // This is the estimated time for a function to run. 
> > Some of them takes an hour.
> >     mylabeltext += "Continuing after the first fundtion that took 60 
> > seconds\n";
> >     cout << "Continuing after various functions and processing..." << 
> > endl;
> >     label.set_text(mylabeltext);
> >
> >     sleep(60);  // This represents another stage of processes and 
> > operations.  I'm attempting to update
> >     // the status to the user.
> >     //A MODIFICATION HERE '+=' instead of yours '=''
> >     mylabeltext += "Other events are taking place that has taken 
> > another 60 seconds\n";
> >     cout << "Other events have taken place" << endl;
> >     label.set_text(mylabeltext);
> >     // AND NOW
> >     Gtk::Main::run(window);
> >     return 0;
> > }
> > //----------------------------------------------
> > //code end
> >
> > -- L. James
> >
>
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