Hello.
I apologize in advance if this is not the correct list. I have a program
that compiles and links. At runtime it will instantiate instances of
GtkTable but it hangs with the error messages below if I try to use a
GtkGrid. Here is the relevant section of the code.
container.cc
//static method called first by the lv2 host.
static LV2UI_Handle instantiate(const struct _LV2UI_Descriptor * descriptor,
const char * plugin_uri, const char * bundle_path,
LV2UI_Write_Function write_function, LV2UI_Controller controller,
LV2UI_Widget * widget, const LV2_Feature * const * features) {
std::cout << "instantiate EMAP lv2 UI" << std::endl;
if (strcmp(plugin_uri, EMAP_URI) != 0) {
fprintf(stderr,
"SORCER_URI error: this GUI does not support plugin with URI %s\n",
plugin_uri);
return NULL;
}
gtk_init(0, NULL);
std::cout << "called gtk_init." << std::endl;
//allocate an emap instance.
EmapContainer* emap = new EmapContainer(NULL, true);
std::cout << "instantiated EMAP lv2 UI" << std::endl;
return (LV2UI_Handle) emap;
}
//constructor called within instantiate above
EmapContainer::EmapContainer(fluid_synth_t* synth_new, bool is_lv2) {
if(is_lv2){
std::cout << "making EMAP container (fluidsynth UI)" <<
std::endl;
GtkWindow* emap2 = GTK_WINDOW(gtk_window_new(GTK_WINDOW_TOPLEVEL));
emap = emap2;
std::cout << "called gtk_window_new." << std::endl;
gtk_window_set_title(GTK_WINDOW(emap2),
"EMAP - Easy Midi Audio Production");
std::cout << "set title" << std::endl;
gtk_window_set_default_size(GTK_WINDOW(emap2), 400, 400);
std::cout << "set default window size" << std::endl;
/* deprecated
GtkWidget* container2 = gtk_table_new(2, 0, false);
std::cout << "made container2" << std::endl;
container = GTK_TABLE(container2);
*/
//Gtk::Grid* abc = new Gtk::Grid();
//std::cout << "made gtkmm grid" << std::endl;
container2 = gtk_grid_new();
//this works...continer2 = gtk_table_new(1, 4, true);
std::cout << "application hangs on gtk_grid_new()" << std::endl;
}
}
Here is what's displayed in the console.
instantiate EMAP lv2 UI
called gtk_init.
(jalv.gtk:5033): GLib-GObject-CRITICAL **: g_object_set_qdata_full:
assertion 'quark > 0' failed
making EMAP container (fluidsynth UI)
called gtk_window_new.
set title
set default window size
(jalv.gtk:5033): GLib-GObject-WARNING **: cannot register existing type
'GtkWidget'
(jalv.gtk:5033): GLib-GObject-WARNING **: cannot add class private field to
invalid type '<invalid>'
(jalv.gtk:5033): GLib-GObject-WARNING **: cannot add private field to
invalid (non-instantiatable) type '<invalid>'
(jalv.gtk:5033): GLib-GObject-CRITICAL **: g_type_add_interface_static:
assertion 'G_TYPE_IS_INSTANTIATABLE (instance_type)' failed
(jalv.gtk:5033): GLib-GObject-WARNING **: cannot register existing type
'GtkBuildable'
(jalv.gtk:5033): GLib-GObject-CRITICAL **:
g_type_interface_add_prerequisite: assertion 'G_TYPE_IS_INTERFACE
(interface_type)' failed
(jalv.gtk:5033): GLib-CRITICAL **: g_once_init_leave: assertion 'result !=
0' failed
(jalv.gtk:5033): GLib-GObject-CRITICAL **: g_type_add_interface_static:
assertion 'G_TYPE_IS_INSTANTIATABLE (instance_type)' failed
(jalv.gtk:5033): GLib-GObject-CRITICAL **: g_type_register_static:
assertion 'parent_type > 0' failed
(jalv.gtk:5033): GLib-GObject-WARNING **: cannot add private field to
invalid (non-instantiatable) type '<invalid>'
Do you have any hints at what I can try to get the GtkGrid working? I'm
trying to switch to this to this since GtkTable is deprecated.
Thanks for your help.
Bill.
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