Re: Scrolled window resizing question.

["Bob Caryl" <bob fis-cal com>]

Check out http://www.gtkmm.org/docs/gtkmm-2
4/docs/reference/html/classGtk_1_1Alignment.html and see if it will help you

 
Bob Caryl
-------Original Message-------
 
From: Paul Davis
Date: 10/08/05 15:00:00
To: Bartek Kostrzewa
Cc: gtkmm-list gnome org
Subject: Re: Scrolled window resizing question.
 
Bartek Kostrzewa wrote:
 
>pjdavis engineering uiowa edu wrote:
>
>
>>Does anyone know how to make a scrolled window stop expanding once the
need for
>>a scrollbar is gone? I've been playing around with some different things
but I
>>can't figure this one out.
>>
>>The goal is to have a scrolled window that will expand while it still
needs a
>>scrollbar, and then once the scroll bar dissappears, the widget stops
expanding
>>with further expansion of the containing widget.
>>
>>Thanks,
>>Paul Davis
>>
>>_______________________________________________
>>gtkmm-list mailing list
>>gtkmm-list gnome org
>>http://mail.gnome.org/mailman/listinfo/gtkmm-list
>>
>>
>>
>
>from scrolledwindow.h:
>
> void set_policy(PolicyType hscrollbar_policy, PolicyType
>vscrollbar_policy);
>
>from enums.h:
>
>enum PolicyType
>{
> POLICY_ALWAYS,
> POLICY_AUTOMATIC,
> POLICY_NEVER
>};
>
>hence:
>
>MyScrolledWindow.set_policy(Gtk::POLICY_AUTOMATIC,Gtk::POLICY_AUTOMATIC);
>
>_______________________________________________
>gtkmm-list mailing list
>gtkmm-list gnome org
>http://mail.gnome.org/mailman/listinfo/gtkmm-list
>
>
Silly goose.
 
I understand the concept of setting the scrollbar policy.
 
 
The idea is that *using* the automatic scroll bar policy, when the
scroll bar dissappears, the scrolled window stops expanding. ( That
means change size )
 
I wrote a short little test to show what I mean.
 
compile with:
g++ `pkg-config gtkmm-2.4 --cflags --libs` scrolltest.cc -o scrolltest
 
////// ScrollTest.cc
#include <gtkmm.h>
 
#include <sstream>
#include <string>
 
class ScrollTest : public Gtk::Window
{
public:
ScrollTest()
{
set_title( "Scroll Test" ) ;
 
Gtk::VBox* scrolled_vbox = Gtk::manage( new Gtk::VBox() ) ;
scrolled_vbox->set_homogeneous( true ) ;
scrolled_vbox->set_border_width( 10 ) ;
scrolled_vbox->show() ;
 
Gtk::Label* label ;
for( int i = 0 ; i < 10 ; i++ )
{
std::stringstream ss ;
ss << "Label: " << ( i + 1 ) ;
 
label = Gtk::manage( new Gtk::Label( ss.str() ) ) ;
label->show() ;
 
scrolled_vbox->pack_start( *label, Gtk::PACK_SHRINK,
0 ) ;
}
 
Gtk::ScrolledWindow* scrolled_window = Gtk::manage( new
Gtk::ScrolledWindow() ) ;
scrolled_window->set_policy( Gtk::POLICY_NEVER,
Gtk::POLICY_AUTOMATIC ) ;
scrolled_window->show() ;
scrolled_window->add( *scrolled_vbox ) ;
 
Gtk::VBox* main_vbox = Gtk::manage( new Gtk::VBox() ) ;
main_vbox->show() ;
 
main_vbox->pack_start( *scrolled_window,
Gtk::PACK_EXPAND_WIDGET, 0 ) ;
 
label = Gtk::manage( new Gtk::Label( "Spacer" ) ) ;
label->show() ;
main_vbox->pack_start( *label, Gtk::PACK_EXPAND_WIDGET,
0 ) ;
 
add( *main_vbox ) ;
}
 
~ScrollTest() {}
} ;
 
int
main( int argc, char* argv[] )
{
Gtk::Main m( argc, argv ) ;
ScrollTest test ;
m.run( test ) ;
}
 
 
 
 
 
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