Re: Combobox focus event

[cecashon aol com]

 Hi Thomas,

You can try getting the private toggle button in the combo box. This isn't a solution using the given GTK api 
but if you want to inspect the how to get the "focus-in-event" to work with a combo box, this might be 
helpful. You are working in C right?

Eric


/*
    gcc -Wall combo_focus1.c -o combo_focus1 `pkg-config gtk+-3.0 --cflags --libs`
    Tested on Ubuntu16.04, GTK3.18.
*/

#include<gtk/gtk.h>

//From gtkcombobox.c
struct _GtkComboBoxPrivate
{
  GtkTreeModel *model;

  GtkCellArea *area;

  gint col_column;
  gint row_column;

  gint wrap_width;

  gint active; /* Only temporary */
  GtkTreeRowReference *active_row;

  GtkWidget *tree_view;

  GtkWidget *cell_view;

  GtkWidget *box;
  GtkWidget *button;
  GtkWidget *arrow;

  GtkWidget *popup_widget;
  GtkWidget *popup_window;
  GtkWidget *scrolled_window;

  //GtkCssGadget *gadget;

  gulong inserted_id;
  gulong deleted_id;
  gulong reordered_id;
  gulong changed_id;
  guint popup_idle_id;
  guint activate_button;
  guint32 activate_time;
  guint scroll_timer;
  guint resize_idle_id;

  /* For "has-entry" specific behavior we track
   * an automated cell renderer and text column
   */
  gint  text_column;
  GtkCellRenderer *text_renderer;

  gint id_column;

  guint popup_in_progress : 1;
  guint popup_shown : 1;
  guint add_tearoffs : 1;
  guint has_frame : 1;
  guint is_cell_renderer : 1;
  guint editing_canceled : 1;
  guint auto_scroll : 1;
  guint button_sensitivity : 2;
  guint has_entry : 1;
  guint popup_fixed_width : 1;

  GtkTreeViewRowSeparatorFunc row_separator_func;
  gpointer                    row_separator_data;
  GDestroyNotify              row_separator_destroy;

  GdkDevice *grab_pointer;

  gchar *tearoff_title;
};

static gboolean focus_button(GtkWidget *widget, GdkEvent *event, gpointer user_data);
static gboolean focus_combo(GtkWidget *widget, GdkEvent *event, gpointer user_data);

int main(int argc, char *argv[])
  {
    gtk_init(&argc, &argv);

    GtkWidget *window=gtk_window_new(GTK_WINDOW_TOPLEVEL);
    gtk_window_set_title(GTK_WINDOW(window), "Rooster Icon");
    gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
    gtk_container_set_border_width(GTK_CONTAINER(window), 10);
    gtk_window_set_default_size(GTK_WINDOW(window), 200, 100);
    g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);

    GtkWidget *button=gtk_button_new_with_label("Button");
    gtk_widget_set_hexpand(button, TRUE);
    gtk_widget_set_vexpand(button, TRUE);
    g_signal_connect(button, "focus-in-event", G_CALLBACK(focus_button), NULL);  

    GtkWidget *combo=gtk_combo_box_text_new();
    gtk_combo_box_text_insert(GTK_COMBO_BOX_TEXT(combo), 0, "1", "Turtle");
    gtk_combo_box_text_insert(GTK_COMBO_BOX_TEXT(combo), 1, "2", "Koala");
    gtk_combo_box_text_insert(GTK_COMBO_BOX_TEXT(combo), 2, "3", "Cheetah");
    gtk_combo_box_set_active(GTK_COMBO_BOX(combo), 0);
    gtk_widget_set_hexpand(combo, TRUE);
    GtkComboBoxPrivate *priv=G_TYPE_INSTANCE_GET_PRIVATE((combo), GTK_TYPE_COMBO_BOX, GtkComboBoxPrivate); 
    g_signal_connect(priv->button, "focus-in-event", G_CALLBACK(focus_combo), NULL); 
           
    GtkWidget *grid=gtk_grid_new();
    gtk_grid_attach(GTK_GRID(grid), button, 0, 0, 1, 1);
    gtk_grid_attach(GTK_GRID(grid), combo, 0, 1, 1, 1);
  
    gtk_container_add(GTK_CONTAINER(window), grid);
    gtk_widget_show_all(window);

    gtk_main();

    return 0;
  }
static gboolean focus_button(GtkWidget *widget, GdkEvent *event, gpointer user_data)
  {
    g_print("Button Focus\n");
    return FALSE;
  }
static gboolean focus_combo(GtkWidget *widget, GdkEvent *event, gpointer user_data)
  {
    g_print("Combo Focus\n");
    return FALSE;
  }