Re: How to create the particular area in this window?

[Allen <allen saucier cas-inc com>]

I'm sorry I can't see your picture or other attachment,

but you're welcome to send them to me directly.  However, I'll try to 
help w/ my recent knowledge of gtkmm's TreeViews.

They're cool but HARD to figure out.  Here are some docs on TreeViews 
that I found: (more stars, better info)
1. http://scentric.net/temp/tutorial/ **
2. http://www.gtk.org/tutorial/index.html ***
3. http://www.gtkmm.org/docs/gtkmm-2.4/docs/tutorial/html/ch08.html ***
4. http://liw.iki.fi/liw/texts/gtktreeview-tutorial.html   ****

I use them and it took a while for me to understand the use of "list 
stores/tree stores" and their relationship to the actual view.  However, 
they are quite powerful.

The "Combo" boxes you wish to mimic can be done in an actual tree view 
column!  But you've got to understand how to write a cell renderer.

So, here's the connection between the TreeView, the "Store", and the 
Renderer in a nutshell - anyone's WELCOME To correct me too!  I'm no 
expert @ TreeViews.

1. Must construct a "Store" first that is composed of the "columns" you 
wish or MIGHT wish to display.  Example

#ifndef H_CALLTREEMODELCOLUMNS_H
#define H_CALLTREEMODELCOLUMNS_H

#include <gtkmm.h>
#include <string>

/**
* 
*****************************************************************************
* \class CModelColumns
*
*    \brief Creates a model for the columns of a list box
*
* Detailed Description:
*    All list boxes must have a model for their columns.  All columns 
do not
*    have to be used, so as many columns may be added to accomodate any 
special
*    situation.
*
* The Mortar Filename can also be a RAM file name.
* 
*****************************************************************************
*/
class CAllTreeModelColumns : public Gtk::TreeModel::ColumnRecord
{
        // //////////////////////////////////////
public:// Instance Methods
       // //////////////////////////////////////

   // add all columns to the model
   CAllTreeModelColumns(void)
   {
     add(m_colRowNumber);
     add(m_colRowColor);
    }; ///< ctor

   
        // //////////////////////////////////////
public:// Instance Attributes
       // //////////////////////////////////////
              
   // Columns Available
   //
   Gtk::TreeModelColumn<std::string>               
m_colRowNumber;       ///< Row Number
   Gtk::TreeModelColumn<std::string>               
m_colSensorName;      ///< Name of Sensor
   Gtk::TreeModelColumn<Glib::RefPtr<Gdk::Pixbuf>> 
m_colThreat1Color;    ///< the color of a legend object
   Gtk::TreeModelColumn<bool>                      
m_colEventOnOff;      ///< Event On or Off
};


Notice that 2 of the 4 columns are NOT added to the Constructor of this 
class which holds ALL of the columns I might wish to use.  That is on 
purpose to show you that if you DO  NOT   add these columns in the 
constructor with the ADD command, they really are NOT part of the column 
class OBJECT when it is instantiated.

Also, the types are very important.  string is easy.  bool I've not 
learned how to use yet but it's for toggle buttons.  the pixubuf is 
really cool! You can put a picture in a Gtk TreeView Cell!  awesome & it 
works I do that.


OK, we have the "columns" class, now you've got to have the actual "list 
or tree" store.  TreeStores are used if you have a tree type structure 
to your data.  Lists are lists - a tree with only 1 level.

     Glib::RefPtr<Gtk::ListStore>  m_lststorSensors;                  
///< list store for Sensors
     Glib::RefPtr<Gtk::ListStore>  m_lststorGuns;                     
///< list store for Guns


Now you need the actual TREEVIEW that is composed of the "store"

     Gtk::TreeView                *m_tvpSensorTreeView;               
///< Sensors Tree View
     Gtk::TreeView                *m_tvpGunTreeView;                  
///< Guns/Defending Weapons Tree view

  m_lststorSensors = Gtk::ListStore::create( m_atmcAllTreeModelColumns );
  m_lststorGuns    = Gtk::ListStore::create( m_atmcAllTreeModelColumns );
  
  m_tvpSensorTreeView->set_model(m_lststorSensors);
  m_tvpSensorTreeView->property_enable_grid_lines();
  m_tvpSensorTreeView->set_rules_hint();
 
  m_tvpGunTreeView->set_model(m_lststorGuns);
  m_tvpGunTreeView->property_enable_grid_lines();
  m_tvpGunTreeView->set_rules_hint();


Ok, show instantiating the stores using an OBJECT!!!  named   
m_atmcAllTreeModelColumns;  Its declaration is:         
CAllTreeModelColumns          m_atmcAllTreeModelColumns;         ///< 
All Tree Model Columns Available to all Tree Views

Why?  Because it makes accessing the Column easier later on, which is 
covered w/in the tutorials I've referred to.

They I assign the "stores" to their rightful TreeViews.  However, you'll 
also see the use of enable_grid_lines & rules_hint.  They, they don't 
work for me and I don't know why.  But they're supposed to draw grid 
lines and hi-lite every other line in the row. 

From here, it's best to read the tutorials to learn how to use 
Treeviews in general.  They're very helpful and I'd just be repeating 
what they say.

I hope all goes very well & for the combo boxes within a TreeView Cell, 
it can be done!!!  Buuuuut I'm not exactly sure how.  Sorry. :-(

Hope this info helps.... :-)

--
Sincerely, Allen

Gene Allen Saucier, Jr
Senior Software Engineer
CAS, Inc
100 Quality Circle
Huntsville, AL  35806
or
PO Box 11190
Huntsville, AL  35814
(256) 922-6453 (w)
"...As for I and my house, we shall follow the Lord"  Joshua 24:15