connecting GUI to program

[wl3]

No. In the most of cases it is NOT reasonable.

BTW, on and for what platform are you going to develop your GUI?

I'm using clutter as the basis.

http://www.clutter-project.org/

Here is an example of what I am talking about. This is just the GUI portion so far of what happens when the Go Back button is clicked. The actors are all inside a single container, the stage, which is basically your window.

 

void GoBack_Clicked (ClutterClickAction *action, ClutterActor *actor, gpointer user_data) {

    for (int i=0; i < 18; ++i) 
	clutter_actor_hide (Actor_Notes_Text[i]);

    SomethingHasBeen_Selected=false;
    clutter_actor_set_size (Actor_Title, 600, 110);

    clutter_actor_show (Actor_NewProject);
    clutter_actor_show (Actor_LoadProject);
    clutter_actor_show (Actor_DeleteProject);
    clutter_actor_show (Actor_About);
    
    clutter_actor_hide (Actor_Text);
    clutter_actor_hide (Actor_Text_Box);
    clutter_actor_hide (Actor_Enter);
    clutter_actor_hide (Actor_Project_Title_Text);
    clutter_actor_hide (Actor_Blank_Screen);
    clutter_actor_hide (Actor_Line);
    clutter_actor_hide (Actor_Line2);
    clutter_actor_hide (Actor_Line3);
    clutter_actor_hide (Actor_Line4);

    clutter_actor_hide (Actor_Run);
    clutter_actor_hide (Actor_Settings);
    clutter_actor_hide (Actor_Files);
    clutter_actor_hide (Actor_Results);
    clutter_actor_hide (Actor_Exit);
    clutter_actor_hide (Actor_ProjectTitle);
    clutter_actor_hide (Actor_Notes);
    clutter_actor_hide (Actor_Help);

    clutter_actor_hide (Actor_Stop);
    clutter_actor_hide (Actor_PlayPause);
    clutter_actor_hide (Actor_PlayPauseAll);
    clutter_actor_hide (Actor_Add);
    clutter_actor_hide (Actor_AddAll);
    clutter_actor_hide (Actor_Remove);
    clutter_actor_hide (Actor_RemoveAll);
    clutter_actor_hide (Actor_Info);
    clutter_actor_hide (Actor_Blank);
    clutter_actor_hide (Actor_Line5);

    clutter_timeline_stop (TimeLine_Run);	
    clutter_actor_set_z_rotation_from_gravity (Actor_Run, 0.0, CLUTTER_GRAVITY_CENTER);
    clutter_timeline_stop (TimeLine_Settings);
    clutter_actor_set_z_rotation_from_gravity (Actor_Settings, 0.0, CLUTTER_GRAVITY_CENTER);
    clutter_timeline_stop (TimeLine_Files);
    clutter_actor_set_z_rotation_from_gravity (Actor_Files, 0.0, CLUTTER_GRAVITY_CENTER);
    clutter_timeline_stop (TimeLine_Results);
    clutter_actor_set_z_rotation_from_gravity (Actor_Results, 0.0, CLUTTER_GRAVITY_CENTER);

    clutter_desaturate_effect_set_factor(CLUTTER_DESATURATE_EFFECT(DSRun), Saturation);
    clutter_desaturate_effect_set_factor(CLUTTER_DESATURATE_EFFECT(DSSettings), Saturation);
    clutter_desaturate_effect_set_factor(CLUTTER_DESATURATE_EFFECT(DSResults), Saturation);
    clutter_desaturate_effect_set_factor(CLUTTER_DESATURATE_EFFECT(DSFiles), Saturation);

}