Re: Get size of widget

[Phil Wolff <adiabat centurylink net>]

A widget's size is negotiated when it is realized. As in one of your 
other questions, signal_realized() should help.


On 12/26/2017 01:05 AM, Klaus Rudolph wrote:
> I simply want to know which size a widget has. I need this info to set 
> a ScrolledWindow to a maximum size if the size of the widget is bigger 
> than the screen.
>
> But all functions I know give a constant value of 1.
>
> #include <iostream>
> #include <gtkmm.h>
> #include <gtkmm/window.h>
>
> class ExampleWindow: public Gtk::Window
> {
>     Gtk::Button button;
>     public:
>     ExampleWindow(): button("Hallo")
>     {
>         add(button);
>         GetSize();
>     }
>
>     void GetSize()
>     {
>         std::cout << button.get_width() << " " << button.get_height() 
> << std::endl;
>         std::cout << button.get_allocated_width() << " " << 
> button.get_allocated_height() << std::endl;
>     }
> };
>
>
> int main(int argc, char* argv[])
> {
>     Gtk::Main kit(argc, argv);
>
>     ExampleWindow window;
>
>     window.GetSize();
>     window.show_all_children();
>     window.GetSize();
>     Gtk::Main::run(window);
>     return 0;
> }
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