Re: how to shrink a window

[Phil Wolff <adiabat centurylink net>]

See 
https://developer.gnome.org/gtkmm/stable/classGtk_1_1Widget.html#a5e95431f630a226b0b7297e4815ee945 
under set_size_request:

"In most cases, Gtk::Window::set_default_size() is a better choice for 
toplevel windows than this function; setting the default size will still 
allow users to shrink the window. Setting the size request will force 
them to leave the window at least as large as the size request. When 
dealing with window sizes, Gtk::Window::set_geometry_hints() can be a 
useful function as well."

Perhaps the reference to users is overly restrictive, since not allowing 
shrinkage applies to code as well.

On 2015/02/17 10:46, Klaus Rudolph wrote:
> I have a very simply problem: I want to shrink a window but I can't get it run.
> The call to set_size_request seems to resize the window ONLY if it should be bigger as before. The simple 
> question is: How can I shrink a window?
>
> Minimized Example Code:
>
> #include <iostream>
> #include <gtkmm.h>
> #include <goocanvasmm.h>
>
> Goocanvas::Canvas* canvas;
> Gtk::ScrolledWindow* sw;
> Gtk::Window* winptr;
>
> bool Do( const Glib::RefPtr<Goocanvas::Item>& item, GdkEventButton* ev)
> {
>      std::cout << "Do" << std::endl;
>      //sw->set_size_request( 400,400); // make the window bigger works
>      sw->set_size_request( 100,100); // shrink the window fails! why? Whats to do?
>
>      return true;
> }
>
> int main(int argc, char *argv[])
> {
>      Gtk::Main kit(argc, argv);
>      Goocanvas::init("Simu", "0.1", argc, argv);
>
>      canvas=new Goocanvas::Canvas;
>
>      canvas->set_size_request(300, 300);
>      canvas->set_bounds(0, 0, 300, 300);
>
>
>
>      Glib::RefPtr<Goocanvas::Item> root = canvas->get_root_item();
>
>      Glib::RefPtr<Goocanvas::Ellipse> outer = Goocanvas::Ellipse::create( 100,100,20,20);
>      outer->property_line_width() = 5;
>      outer->property_stroke_color() = "red";
>      outer->property_fill_color()="blue";
>      root->add_child( outer );
>
>      sigc::connection conn2= outer->signal_button_press_event().connect( sigc::ptr_fun(&Do));
>
>      sw = Gtk::manage(new Gtk::ScrolledWindow());
>      sw->add(*canvas);
>
>      Gtk::VBox hbox;
>      hbox.add(*sw);
>
>      Gtk::Window win;
>      winptr=&win;
>      win.add(hbox);
>      win.show_all_children();
>
>      sw->set_size_request( 200,200);
>
>      Gtk::Main::run(win);
>      delete canvas;
> }
>
> Regards
>   Klaus
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