Trait gtk4::prelude::TextViewExtManual[−][src]

pub trait TextViewExtManual {
    fn im_context_filter_keypress<R: AsRef<Event>>(&self, event: &R) -> bool;
}

Required methods

[src]

fn im_context_filter_keypress<R: AsRef<Event>>(&self, event: &R) -> bool

Allow the TextView input method to internally handle key press and release events.

If this function returns true, then no further processing should be done for this key event. See IMContextExtManual::filter_keypress().

Note that you are expected to call this function from your handler when overriding key event handling. This is needed in the case when you need to insert your own key handling between the input method and the default key event handling of the TextView.

⚠️ The following code is in c ⚠️

static gboolean
gtk_foo_bar_key_press_event (GtkWidget *widget,
                             GdkEvent  *event)
{
  guint keyval;

  gdk_event_get_keyval ((GdkEvent*)event, &keyval);

  if (keyval == GDK_KEY_Return || keyval == GDK_KEY_KP_Enter)
    {
      if (gtk_text_view_im_context_filter_keypress (GTK_TEXT_VIEW (widget), event))
        return TRUE;
    }

  // Do some stuff

  return GTK_WIDGET_CLASS (gtk_foo_bar_parent_class)->key_press_event (widget, event);
}

`event`

the key event

Returns

true if the input method handled the key event.

Implementors