c++ - Connect to Gtk::Window signal_delete_event -

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i want connect signal window.signal_delete_event, fails following error messages:

  • no match call ‘(sigc::bound_mem_functor0) (_gdkeventany* const&)’ opticalinput
  • return-statement value, in function returning 'void' [-fpermissive]
  • void value not ignored ought be

that code line causing error:

window.signal_delete_event().connect(sigc::mem_fun(this,&guiwindow::onexitclicked));

the pointed member function one:

void guiwindow::onexitclicked() {     *state = false;     gtk::main::quit(); }

any ideas on how fix this?

your method must match signature of signal. in gtkmm documentation signal_delete_event(), following prototype given:

bool on_my_delete_event(gdkeventany* event)

using naming, method must defined follows:

bool guiwindow::onexitclicked(gdkeventany* event) { ... }

the return value used indicate whether or not have handled event. if return true, other handlers event not see it.


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