Hello. My question is quite simple, but I haven't been able to find such thing in the gtkmm documentation. I'm using cairo and a Gtk::DrawingArea derived class to draw inside a window in Gtk. The problem is that I get data from three entries in a function, and after that, I want to update the drawing of the area when a button is clicked. To update the drawing, if I'm right, I must do it from the on_expose_event overriden function in the Gtk::DrawingArea derived class. Since I want to update immediatly after calling the slot connected to signal_clicked() in my button, I must emit a signal signal_expose_event() if I'm not wrong. I looked at the documentation and I realized that signal_expose_event() doesn't return a sigc::signal but a proxy object. How can I emit a signal so that on_expose_event is called after clicking the button from the slot called for the button?
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