Re: Is it possible to force a tooltip to be shown.

Thank you very much. I'll try it.

On 03/10/2019 10:10, Andrew E. Makeev wrote:
> В Ср, 02/10/2019 в 11:57 +0100, Carlos Gomez пишет:
>> Hi all,
>>
>>
>> I have a DrawingArea where I am plotting some data (lines made of
>> pairs
>> of time/temperature) . When I click on a line or close enough I want
>> to
>> show a tooltip indicating the line and the values. I can get the line
>> id
>> and the values and I am updating the contents of the tooltip and
>> calling
>> trigger_tooltip_query, but the tooltip is not shown until I move the
>> mouse and wait for a little. Is there a way to force the tooltip to
>> be
>> shown?
>>
>>
>> If I remove the call to trigger_tooltip_query the behaviour is
>> exactly
>> the same: the tooltip is not shown if the mouse is not moved.
>>
>> Thanks in advance.
>>
>> Carlos.
>>
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> Hi there,
>
> Look at my function that shows tooltip for treeview column (gtkmm-2.12
> version)
>
>      bool Grid::motion_notify_cb( GdkEventMotion* event )
>      {
>          Gtk::TreeModel::Path path;
>          Gtk::TreeViewColumn* column;
>          int cell_x, cell_y;
>
>          if ( view.get_path_at_pos( (int)event->x,
>                                     (int)event->y,
>                                     path, column,
>                                     cell_x, cell_y ) )
>          {
>              Glib::ustring tip = get_cell_tooltip( path, column->get_title() );
>              if( !tip.empty() )
>              {
>                  instanceProperties.tooltips->set_tip( view, tip );
>                  GdkEventCrossing* user_event = (GdkEventCrossing*)gdk_event_new( GDK_ENTER_NOTIFY );
>                  user_event->window = event->window;
>                  user_event->send_event = TRUE;
>                  user_event->subwindow = event->window;
>                  user_event->time = event->time;
>                  user_event->x = event->x;
>                  user_event->y = event->y;
>                  user_event->x_root = event->x_root;
>                  user_event->y_root = event->y_root;
>                  user_event->mode = GDK_CROSSING_NORMAL;
>                  user_event->detail = GDK_NOTIFY_ANCESTOR;
>                  user_event->focus = TRUE;
>                  Gdk::Event cpp_event( (GdkEvent*)user_event );
>                  cpp_event.put();
>              }
>              else
>              {
>                  instanceProperties.tooltips->unset_tip( view );
>              }
>          }
>          else
>          {
>              instanceProperties.tooltips->unset_tip( view );
>          }
>          return false;
>      }
>
> In other words you should fire event that will show tooltip at runtime
> (emulate mouse entering area of tooltip widget)
>
> Regargs,
> -Andrew
>
>
>
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