Hi,
I have to deal with a workaround for a bug
https://bugzilla.gnome.org/show_bug.cgi?id=711709
But the behavior is quite strange!
After pressing on the circle a dialog is shown (expected). If I press the ok
button on the dialog, the whole window hangs on the mouse pointer! This is
really not what I expect! :-)
To reproduce it:
compile prog with:
/opt/linux-gnu_4.8.2/bin/g++ `pkg-config gtkmm-3.0 --cflags` `pkg-config
goocanvasmm-2.0 --cflags` --std=c++11 -Wall --pedantic -Wextra -O2 `pkg-config
gtkmm-3.0 --libs` `pkg-config goocanvasmm-2.0 --libs` main.cpp -g -o go
and main.cpp is:
#include <gtkmm.h>
#include <goocanvasmm.h>
#include <sigc++/sigc++.h>
Goocanvas::Canvas m_canvas;
bool ShowDialog( const Glib::RefPtr<Goocanvas::Item>& item, GdkEventButton* ev)
{
enum { OK };
Gtk::Dialog dialog;
dialog.add_button( Gtk::Stock::OK, OK);
dialog.show_all_children();
dialog.run();
// this line SHOULD! fixes the problem reported in BUG 711709
m_canvas.pointer_ungrab( item, ev->time);
return false;
}
int main(int argc, char* argv[])
{
Gtk::Main app(&argc, &argv);
Goocanvas::init("example", "0.1", argc, argv);
Gtk::Window win;
m_canvas.set_size_request(640, 480);
m_canvas.set_bounds(0, 0, 800, 800);
Glib::RefPtr<Goocanvas::Item> root = m_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(&ShowDialog));
win.add(m_canvas);
win.show_all_children();
Gtk::Main::run(win);
return 0;
}
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