Re: Why "m_scrwindow" doesn't resize vertically ?

[Kjell Ahlstedt <kjell ahlstedt bredband net>]

2011-11-16 19:35, Glus Xof skrev:
> Hi guys,
>
> To explain better my problem, I write for you a little example code...
>
> ---
> #include<gtkmm.h>
>
> class DialogTest
> : public Gtk::Dialog
> {
> public:
> 	DialogTest();
> 	~DialogTest(){};
>
> private:
> 	Gtk::Frame m_frame;
>
> 	Gtk::Label m_label;
>
> 	Gtk::ScrolledWindow m_scrwindow;
> 	Gtk::TextView m_textview;
> 	Gtk::Table m_table;
>
> 	Glib::RefPtr<Gtk::TextBuffer>  m_textbuffer;
> };
>
> DialogTest::DialogTest()
> : 	m_label ("This is a test label..."),
> 	m_table (2, 1, false)
> {
> 	set_title ("Test Dialog");
> 	set_deletable (false);
>
> 	m_scrwindow.add (m_textview);
> 	m_scrwindow.set_policy (Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC);
> 	m_scrwindow.set_shadow_type (Gtk::SHADOW_ETCHED_IN);
>
> 	m_textbuffer = Gtk::TextBuffer::create();
>
> 	m_textview.set_buffer (m_textbuffer);
> 	m_textview.set_editable (true);
>
> 	m_table.attach (m_label, 0, 1, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::SHRINK, 0, 0);
> 	m_table.attach (m_scrwindow, 0, 1, 1, 2, Gtk::FILL|Gtk::EXPAND,
> Gtk::FILL|Gtk::EXPAND, 0, 0);
>
> 	m_frame.set_shadow_type (Gtk::SHADOW_ETCHED_IN);
> 	m_frame.add (m_table);
>
> 	// Not compiles (for me...)
> 	// error: ‘get_content_area’ was not declared in this scope
> 	// get_content_area() ->  pack_start (m_frame);
>
> 	get_vbox() ->  add (m_frame);
>
> 	add_button (Gtk::Stock::OK, Gtk::RESPONSE_OK);
>
> 	show_all();
>
> 	run ();
> 	
> 	hide();
>
> 	show_all();
> }
>
> int main (int argc, char *argv[])
> {
> 	Gtk::Main test (argc, argv);
>
> 	DialogTest dialogtest;
>
> 	return 0;
> }
> ---
>
> When resizing the dialog, the scrolledwindow remains with the same
> vertical size... and lefts available space blank....
>
> The idea is to adjust the scrolledwindow space, resizing the dialog...
>
> Glus
Your program works as you want in gtkmm 2, but not in gtkmm 3.
The behaviour of add() in Gtk::Box (actually the underlying 
gtk_box_add()) has changed between gtk+2 and gtk+3, it seems. 
Gtk::Box::add(child) is equivalent to pack_start(child, 
Gtk::PACK_SHRINK, 0).
If you replace
   get_vbox() -> add (m_frame);
by
   get_vbox() -> pack_start (m_frame, Gtk::PACK_EXPAND_WIDGET, 0);
you will get the result you want.

Kjell